SACU ROAD RACE REGULATIONS 2020 - Scottish ...
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SACU ROAD
RACE
REGULATIONS
2020
These regulations are copyright and may not be reproduced without the
permission of the SACU
Scottish Auto Cycle Union E: office@sacu.co.uk
28 West Main St
Uphall EH52 5DW T : 01506 858 354
West Lothian EH52 5DWContents SCOTTISH CHAMPIONSHIP CLASSES 2020 .................................................................. 3 SCOTTISH AUTO CYCLE UNION LICENCE CONDITIONS 2020 ....................................... 5 SCOTTISH ROAD RACING CHAMPIONSHIP RULES 2020 .............................................. 8 2020 PRE-INJECTION 600 SCOTTISH CHAMPIONSHIP TECHNICAL REGULATIONS ..... 11 GUIDANCE FOR FORMULA 600 SPEC ........................................................................ 12
SCOTTISH CHAMPIONSHIP CLASSES 2020
Class Specification
Scottish Superbikes 4 stroke motorcycles exceeding 590cc and up to 1300cc, (not exceeding 10 years old.)
Scottish Championship points awarded on straight race result.
Any tyres, including slicks and wets allowed.
Numbers - Front Plates White Plate with block black numbers. KEEP IT LEGIBLE.
Red Plate with white numbers will be accepted also.
BSB number plates WILL NOT be accepted unless proof of competing in the current BSB year. Numbers MUST BE
legible. Technical Official and Clerk of the Course decision is final.
Formula 600 Production based machines, 600cc four stroke-four cylinders, 675cc four stroke-
three cylinder solo machines. Rebores up to the manufacturer’s maximum
recommended rebore size are permitted. Standard carburettors or fuel injection as
homologated to be used (ie as per original model for that year).
Treaded tyres only (including wets).
Numbers – Front Plates White with blue numbers. (Red Plate, Yellow numbers also accepted).
SuperTwins Any four-stroke twin cylinder motorcycle originally sold for road use with a water
cooled engine of up to 650cc. TT Lightweight rules.
Green Front Plate, white numbers.
Formula 400 400cc four-strokes and 250cc two-strokes, production based, as per ACU Handbook
Scottish Lightweights
for Formula Specification. Blue Front Plate, white numbers. Production 250/350 2-
strokes
Single Cylinder Production based machine, not exceeding 750cc. White Front Plate, black numbers.
GP125 125cc two-stroke singles. Black Front Plate, white numbers.
Aprilia As per Thundersport GB Technical Regulations. Treaded tyres only,
White front Plate, black numbers. including wets. GP125 and
RRV450GP Moto3 allowed to run slick
Moto3 Four stroke 250cc tyres.
Junior Twins BSB Junior Supersport runners. Production based machines, twin cylinder, 300cc,
restricted to 37 bhp, as per Thundersport Superteens, ie Kawasaki 250 or 300 Ninja,
Yamaha 3. Ages 13 to 22 year old, based on date of birth.
Pre Injection 600 Carburetted four stroke machines, in general production 1992 – 2002.
Treaded tyres only, (including wets.)
Numbers – Front Plates White with blue numbers.
National Championship Status in 2018
CB500 Bikes such as Honda CB500*, Suzuki GS500, Kawasaki ER500
1993-2003 1989-2004 1997-2006
AS PER CURRENT THUNDERSPORT GB TECHNICAL REGULATIONS
Numbers – Front Plates Yellow with black numbers.
*Honda CBF500 not eligible
KILL SWITCH on handlebars MUST work.
Any rider using coolant additives such as antifreeze WILL be excluded from the event.
Front Plate / Numbers Both Side Plates / Numbers
Background 285mm x 235mm Background 260mm x 220mm
Number Height 140mm Number Height 120mm
Number Width 80mm Number Width 70mmNumber Stroke 25 mm Number Stroke 25mm
Space between Numbers 15mm Space between Numbers 15mm
Numbers must be clearly visible to the public and officials.
SCOTTISH SIDECARS 2020
Class Specification
Open Sidecars Formula 1 engine capacity greater than 600cc.
Formula 2 engine capacity 600cc or less.
Reduced number of rounds, Formula 600 – 600cc engine in long chassis
dates nominated by Scottish
Sidecar Racing Club As per 2011 SACU rules for Scottish Championship, up to 1200cc carburetted,
1000cc fuel injected. Scottish Championship is one class, any chassis allowed.
Any tyres, including slicks and wets allowed.
Numbers – Formula 1 - White Plate with black numbers.
Formula 2 - Red Plate with white numbers.
Formula 600 - White Plate with black numbers
KILL SWITCH MUST work.
Any rider using coolant additives such as antifreeze WILL be excluded from the event.
Front Plate / Numbers Both Side Plates / Numbers
Background 285mm x 235mm Background 260mm x 220mm
Number Height 140mm Number Height 120mm
Number Width 80mm Number Width 70mm
Number Stroke 25 mm Number Stroke 25mm
Space between Numbers 15mm Space between Numbers 15mmSCOTTISH AUTO CYCLE UNION LICENCE CONDITIONS 2020 GENERAL 1. To participate in road race events an annual licence issued by the SACU is required, for those resident in Scotland. For those resident in England or the Isle of Man an ACU road Race licence is required. All other licence holders require a valid licence and start permission with insurance from their federation. 2. First time applicants are required to demonstrate an ability to control a motorcycle and complete the SACU Pre-licence Assessment. Full details are contained in the “Road Race Licence Application Pack” obtainable from the SACU. Clubman Competitors are required to wear an orange vest until they have 10 signatures on their record card from 2 different circuits. A total of 10 satisfactory or equivalent signatures are required. Only one signature per event is permitted. To obtain a Satisfactory “S” signature competitors must appear in the official race results as a finisher of a race in accordance with Article 12.3.3. A “Satisfactory” signature is denoted by a capital “S” in the points section of the competitor’s record card and must be signed by a Steward. To obtain an Upgrade “U” signature competitors must finish in the top 50% of classified finishers in National races, from the straight race result NOT Class position within the result – this does not include novice races, heats, qualifiers, consolation races or “B” Finals – and there must be a minimum of 6 finishers of the National race. An “Upgrade” signature, equivalent to 2 “Satisfactory”, is denoted by a capital “U” in the points section of the competitor’s record card and must be signed by a Steward. To upgrade to National, 10 signatures must be obtained during the current year and preceding 2 years. The competitor record card(s) together with copies of the official result sheets pertaining to the signature on the record card should be submitted to the SACU. A licence can be upgraded at any time during the year. 1. Sidecar passengers must hold a valid passenger licence. 2. The parent or Legal Guardian must accompany all competitors, or participants in parades, under 18 years of age to every meeting. This person must attend at signing-on, any riders briefings that take place and be present throughout the meeting. 3. Any competitor who in any SACU, ACU or MCRCB Permitted Event participates on a machine for which he/she is not eligible through age or licence restrictions to take part on will be penalised by a fine of £500.00 and a suspension for one year from the date of the hearing. LICENCE GRADES 1. Parade A licence facilitating participation in non-competitive parades. 2. Clubman Entry level for all first time road race applicants. A Clubman Intermediate Licence will be issued to riders who hold a current Full Class “A” DVLA Licence. 3. National to retain a National Licence, you must have a minimum of 10 signatures (in total) over the last 5 consecutive seasons. Only one signature per event is permitted. National Licence holders may apply for Start Permission to compete abroad. 4. International National licence holders who have held their National Licence for 12 months and who have competed at a minimum of 6 meetings in the previous 12 months may apply for an FIM Non-Championship International Licence through the ACU. A medical examination is required. 5. International Championship National licence holders who have held their National Licence for 12 months and who have competed at a minimum of 6 meetings in the previous 12 months may apply for a Championship Licence through the ACU as described in the appropriate Sporting Code of the UEM or FIM. A medical examination is required. 6. ACU Mountain Course Licence For those National Licence holders who are seeking to obtain the ACU Mountain Course Licence, they will obtain a signature for each day of a multiple day race meeting, up to a maximum of two, as per ACU events, providing race finish per day has been achieved. LAPSED LICENCES Former International Licence holders within the past 5 years, (last raced in 2014), that have allowed their National licence to lapse will, on application for a race licence retain National licence status. Thereafter, they will be required to satisfactorily complete the SACU pre-competition assessment course after which a clubman licence may be issued. LAPSING and LAPSED LICENCES Competitors will be assessed using the following criteria:- Licence holders that have allowed their licences to lapse for more than 5 years will be required to satisfactorily complete the SACU pre-competition assessment course after which a clubman licence may be issued.
Grade To UPGRADE Licence To RETAIN Licence (as per ACU) Lapsed Licences
Previous licence held in 2014 or
before
Clubman or 10 signatures obtained from 2 different circuits in current MUST HAVE HELD LICENCE AND AT LEAST ONE New Rider Assessment, then Clubman
and previous 2 years, ie 2017 and 2018. SIGNATURE PER YEAR FROM 2017, 2018 & 2019. Licence.
Clubman Intermediate 10 signatures obtained from 2 different circuits in current MUST HAVE HELD LICENCE AND AT LEAST ONE New Rider Assessment, then Clubman
and previous 2 years, ie 2017 and 2018. SIGNATURE PER YEAR FROM 2017, 2018 & 2019. Intermediate Licence.
National 2015 - 2019 New Rider Assessment, then Clubman
or Clubman Int. Licence.
10 signatures, over this time, only one signature per event
obtained.
Or 30 points obtained as per table below.
No demonstration of points / race finishes - New Rider
Assessment then Clubman/Clubman Intermediate Licence.Name: SACU Licence No:
It is in the National Licence Holder’s own interests to use this National Licence Retention Record Card – photocopy should be sent to SACU with each licence application.
Riders must have gained 30 points during the previous 5 seasons based on the following: Best result at a race event counts.
Race finishers not completing full race distance, 1 point per qualifying event.
International Event ie NW200, UGP / Manx / TT each race finish counts Road Races Scottish Championships (20 + starters) Support Races at National Events (at least 10 starters)
BSB / Southern 100 / Scarborough
(excluding Support Races) Scottish Events / Irish Road events
BSB Support, Irish Road events, Thundersport and Bemsee / All Club events in England / Ireland / Europe
MRO
All Club events in England / Ireland / Europe
1st – 3rd on full race distance 12 points 1st – 3rd on full race distance 9 points 1st – 3rd on full race distance 6 points
4th – 7th on full race distance 8 points 4th – 7th on full race distance 6 points 4th – 7th on full race distance 3 points
8th – 10th on full race distance 6 points 8th – 10th on full race distance 3 points 8th – 10th on full race distance 2 points
11th – 15th on full race distance 3 points Finisher on full race distance 1 points Finisher on full race distance 1 point
Finisher on full race distance 2 points
Year Event Points Year Event Points Year Event Points
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
9 9 9
10 10 10SCOTTISH ROAD RACING CHAMPIONSHIP RULES 2020 As from 1st January 2020 and thereafter until further notice the rules governing the Scottish Road Racing Championship will be as follows. All previous rules applicable to these Championships will become ineffective and invalid after 31st December 2019. The Racing & Sprints Committee retain the right to amend all or any of these rules or conditions. ORGANISATION 1. The SACU will invite all affiliated clubs already experienced in running Road Race events to apply for dates and permits allowing them to organise Championship or National status events according to the rules laid down by the SACU in advance of the normal November dates meeting. Permit dates shall include the Friday, where Sign-on and Technical Inspection are planned. 2. Dates. Applications for Championship dates will be considered over all other events of lesser standing and no other event of the same discipline will be permitted on the same day. So far as possible, championship events will be spaced a minimum of 12 days apart except for events making up a two day event whether organised by the same club or not. 3. Rules. Any changes to these rules or classes will be notified by SACU no later than 20th November in the preceding year. In addition to these rules, all events will be run in accordance with the rules of the ACU Handbook, National Sporting Code, the Supplementary Regulations and any final instructions that may be issued. 4. Jurisdiction. The SACU will appoint a minimum of two stewards whose duties will be in accordance with the rules of the National Sporting Code. The Club must appoint a Steward who must be suitably qualified. 5. Executive personnel shall all be appointed by the organising club. The Clerk of Course, Senior Technical Officer, Chief Marshal and Secretary of the Meeting must all be currently qualified as required by the SACU. 6. For Scottish Championship events, promotional material of any kind MUST carry the words in large type “SCOTTISH CHAMPIONSHIP EVENT” and in lesser type “Run under SACU Rules”. All discussions and interviews given in advance of the date must make it clear that the meeting is of Scottish Championship Status. 7. The Official Programme. The outside front page of the front cover of the Official Programme MUST carry the words in large type “SCOTTISH CHAMPIONSHIP EVENT” and in lesser type “Run under SACU Rules”. In addition the words “SCOTTISH CHAMPIONSHIP” must be used as the title for all Championship races. For All Road Race Events run with an SACU Permit, the following must appear inside the programme in a prominent position:- Permit Number; List of Officials; Address and telephone number for correspondence with the Organisers; The complete order of the days proceedings; The starting time of racing; The current Championship points table; The format of each Championship class and how the points are awarded; The Championship races must carry the official sponsors title. 8. Supplementary Regulations MUST give the following information:- The location of any Final instructions. All details of awards and prize money. All times of practise and Technical Inspection. The maximum number of entries and reserves. 9. Notifications. The Secretary of the Meeting, at the end of the day’s proceedings will provide each Steward with a copy of the Provisional Results. 10. Liability for Damage. An entrant is liable for any damage caused by himself, his rider, or any agent, representative or servant acting on their behalf, during the event, except on track. 11. Abuse and Intimidation to Officials and Riders. Any rider or member of his party, on being reported to the Clerk of the Course, by way of lodging a protest, for causing intimidation or abuse to any official or other rider/person, will be immediately suspended from the event, removed from the results and asked to leave the event, if the protest is validated by the Clerk of the Course. A report will be sent to the SACU for possible further disciplinary action. This also applies if such abuse is directed at an Official prior to, during or after the event on social media. Prior to the event, the organising Club is within their right to refuse to accept entry. THE EVENT 1. All practises will be run in the morning of the event. ALL CHAMPIONSHIP ROUNDS WILL BE RUN AFTER LUNCH SO FAR AS PRACTICAL. The event will be scheduled to finish no later than 17.30 hours. There must be a minimum lunch break of no less than 30 minutes. 2. Entertainment must be notified in advance in WRITING TO THE STEWARDS who will give their approval or otherwise in writing. Indemnity cover for all entertainment giving protection to all those at the event MUST be in force during the whole period of entertainment. This indemnity to be provided by the organiser of the entertainment. 3. Abandoned rounds – the organising Club can stage missed Championship rounds, at their next event run in the same direction as those cancelled, subject to application and approval by the SACU Road Race Committee.
4. Any departures from the specified programme must be notified to the event stewards for their approval in advance of
their implementation.
5. Where practical, it is recommended that each class will practise and race separately. Each class will receive a
minimum of two
practise sessions each a minimum of 4 laps, or one extended period of 10-minute duration minimum. All competitors will
be required to complete a minimum of three full laps or be ineligible for competition that day. Any deviation from this
procedure is solely at the discretion of the Clerk of the Course.
6. Grid positions will be allocated by timed qualifying. Should timing not be available, the organising club shall use the
most recent Championship positions for that Class, and thereafter positions allocated at the discretion of the organising
club.
7. In addition to whatever awards the organising clubs may offer, the SACU will present each Championship Winner with
a trophy. The SACU will also provide each champion with an inscribed commemorative award. Scottish Champions
will have the exclusive right to run race number “1” in that Class in the following year.
8. TIME LIMIT FOR ENTRIES: All Entries should close 14 days prior to the Event, in order that the Club has sufficient
entries to run a Class. Any further entries are subject to the Secretary of the Meeting’s discretion. Any entries after the
issue of the Steward’s list will be highlighted to the Stewards at the start of the meeting.
9. PRIZEFUND:
THERE WILL BE NO MANADATORY SCOTTISH CHAMPIONSHIP PRIZE FUND. Awards at any event will be subject
to the discretion of the organising Club.
10. The SACU commit to conduct more Drug and Alcohol Testing. Assistance for those suffering from drug and/or
alcohol abuse will be provided by a number of existing free support mechanisms; however, those providing positive test
results face an instant ban of 2 years in line with FIM regulations.
ROAD RACING 2020
ALL Motorcycles (Classic bikes exempt if participating in a Classic bike only race)
1. All machines must be equipped with brake lever protection intended to protect the handlebar brake lever from being
accidentally activated in the case of a collision with another motorcycle.
2. All motorcycles must have a functioning red light mounted at the rear of the machine to be used in rain or low visibility
conditions as instructed by the Clerk of the Course. The team/rider must ensure that the light is switched on whenever a
rain tyre is fitted on the motorcycle and/or when any practice or race is declared “wet” by the Clerk of the Course. Lights
must comply with the specification in ACU Handbook, or with regulations for specific competition, ie Isle of Man TT. Rain
light power supply may be separated from the motorcycle main wiring and battery. In case of dispute over the mounting
position or visibility, the decision of the Chief Technical Officer will be final.
SCOTTISH CHAMPIONSHIPS CLASSES
1. Except for Lightweight Class, all solo machines must be based on Production Motorcycles generally on sale and
available to the general public. The Formula 600 bikes must comply with the current ACU Handbook for Formula 600.
Pre-Injection 600 to comply with previously published SACU specification.
All machines must use unleaded fuel as specified in the ACU Handbook.
2. The engine capacity must not exceed the class limit.
3. The same motorcycle cannot be used in another Scottish Championship Classes. (One bike, one class).
4. Result position for Licence signature will be on the race result.
SCOTTISH SUPERBIKES:
4 stroke motorcycles exceeding 590cc to 1300cc and not exceeding 10 years old. Any tyres including slicks and wets.
FORMULA 600:
Production based machines, 600cc four stroke-four cylinders, (636cc where manufactured) 675cc four stroke-three
cylinder solo machines. Rebores up to the manufacturer’s maximum recommended rebore size are permitted. Standard
carburettors or fuel injection as homologated to be used (ie as per original model for that year). (Treaded tyres only,
including wets).
SCOTTISH LIGHTWEIGHTS:
#
‘Twins’ previously competing in MiniTwin and SuperTwin classes, Formula 400, GP125 , Production 250/350 2-
#
strokes, Aprilia RRV450GP, Moto3 four-stroke 250cc, Single Cylinder production based machine, not exceeding
#
750cc, Junior 400cc Twins (as per MSVR Junior Supersport).. (Treaded tyres only, including wets, Classes allowed to
run slick tyres).
PRE-INJECTION 600:
Carburetted four stroke machines, in general production 1992 – 2002. Carburettors must be as originally fitted to the
homologated model, jetting and needles are free. Engine tuning and gearbox changes are allowed. Slipper clutch and
quick shifter are allowed.
Ignition control is free but may not have traction or launch control. (Treaded tyres only, including wets).CB500
Run to current Thundersport GB rules. Bikes such as Honda CB500 (excluding CBF500) 1993-2003, Suzuki GS500 1989-
2004, Kawasaki ER500 1997-2006. (Controlled tyres only, including wets).
Open Sidecars
Formula 1 engine capacity greater than 600cc. Formula 2 engine capacity 600cc or less. Formula 600 – 600cc engine in
long chassis. As per 2011 SACU rules for Scottish Championship, up to 1200cc carburetted, 1000cc fuel injected.
Scottish Championship is one class, any chassis allowed. (Any tyres, including slicks and wets allowed).
CHAMPIONSHIP POINTS:
Shall be awarded for all classes as follows: 25, 20, 16, 13, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 per race. At each
Championship round there will be two races for each of the Four Solo Scottish Championship Classes. Points will be
awarded as above for each round. All rounds shall count to produce a rider’s final championship points total. In the event
of a tie the competitor with the greatest number of first places will be declared the winner. If this does not resolve the
matter the competitor with the greatest number of second places will be declared the winner and so on until a winner is
determined.
The Winner in each championship will be entitled to use Number 1 as their riding number the following season.
Minimum Championship Race distance must be 12 miles.
Fuel Checks (All classes) : Unleaded as per ACU standing Regulations.
The organisers may supply free of charge Approved unleaded control Fuel, for machines at each race meeting to
randomly selected Riders. The Stewards of the meeting shall select the rider(s) who shall use the controlled fuel on the
day. The selected rider(s) will be notified half an hour before the start of the race to report (with an empty fuel tank), to
the Chief Technical Officer who will oversee the filling of the fuel. The machine will be retained by the organisers in the
controlled area until the start of the warm up lap. Refusal by the competitor to use the control fuel shall lead to exclusion
from the meeting.
LICENCE SIGNATURES
Scottish NATIONAL Licence ONE signature per event.
Exception to this rule are those competitors requiring ACU Mountain Licence who will be eligible for a signature per day
of competition, providing a race was completed.
Scottish CLUBMAN Licence Providing more than 6 finishers in the race, a rider finishing in the top 50%, will receive an
“UPGRADE” signature, otherwise satisfactory. One signature per event.
ACU CLUBMAN Licence Eligible for a signature per day of competition, providing a race was completed each day.2020 PRE-INJECTION 600 SCOTTISH CHAMPIONSHIP TECHNICAL REGULATIONS Eligible Machines The following 4-stroke machines up to and including the listed models are eligible:- Yamaha - FZR 600, FZR 600r, YZF 600, and YZF-R6 1992 – 2002 Honda – CBR 600 FM to FX 1992 – 2002 Suzuki – GSXR 600 1993 – 2000 (all SRAD Models) Kawasaki – ZX6R 1995 – 2002 All motorcycles must comply in every respect with all requirements for road racing as specified in SACU Regulations. Number Board Colours White background with blue numbers. Carburettors Carburettors must be as originally fitted to the homologated model, jetting and needles are free. Fuel All machines must function on fuel within current SACU Regulations. The organisers reserve the right to require “control fuel” to be used (super-unleaded pump fuel). Frame and Rear SubFrame For all machines, the engine and frame must be from the same model. Front Forks Front fork fitments must be of the same design as originally used, but may use different springs, damper rods, etc. Cartridge kits are permitted. The original diameter of stanchions and design must be retained. Steering Damper A steering damper may be added, but may not act as a steering lock device. Swinging Arm The rear swinging arm must be as per the original model. Rear Suspension Units Rear suspension units can be changed for Ohlins, Maxton, etc. Must be homologated models. Wheels Standard as per original model. No after market wheels. Brakes Standard callipers and master cylinders from homologated machines, disc to be of standard size, any manufacturer. No carbon or ceramic units allowed. Tyres Only road legal (supersport type), treaded tyres or full wet tyres may be used by all machines. The use of tyre warmers is allowed. Ignition In principle, the ignition control is free, but may not have traction or launch control function. Generator, Alternator, Electric Starter Generator and alternators may be modified, removed or replaced (ie kit system), the electric starter must operate normally and be able to start the engine after practice and races. Engine and Gearbox Engine tuning and gearbox changes are allowed. Standard pistons and con rods. Slipper Clutch is allowed. Quick shifter is allowed. Electrics Motorcycles must be fitted with a functional ignition kill switch or button mounted on at least one handlebar, (within reach of the hand while on the hand grip). Wiring harness is free. Where possible, oil pressure light fitted (high visibility).
GUIDANCE FOR FORMULA 600 SPEC
Formula 600 “as per ACU handbook” the wording is extracted verbatum from the book. In the 2019 ACU
handbook it is page 297, item 16.2.
Riders can do what they like to the bike, but we’ll expect the bike to be “profile”, and will take the view that as
long as the engine, frame, forks, swinging arm and wheels are as per the “production based machines” model
used, then that’s fine. All of these elements may be “tuned” of course.
Basically, we’ve noticed a trend over the years for competitors to be entering such bikes in the “Superstock 600”
class anyhow. This is because other Clubs run such rules for 600s, and we really struggle to police “stock” rules
on a volunteer basis. So we have to go with the flow. It is hoped that this will also stop the decline in numbers in
this class in Scotland, now becoming a concern to us. It means that the use of quickshifters, which is preferred
by competitors, will now be OK. Many will simply continue to use Superstock spec. bikes compatible with current
BSB rules.
16.2 FORMULA SPECIFICATIONS
These specifications are in addition to and not in place of the Technical Regulations. Solo motorcycles must
comply with the following requirements.
1. Classes
125 – Production based machines up to 125cc two stroke (includes the 72cc and 80cc Jawa and Metrakit type
machines)
250 – Production based machines 250cc four stroke.
400 – Production based machines 250cc two stroke, 400cc four stroke.
600 – Production based machines 600cc four stroke four cylinder and 675cc four stroke three cylinder.
2. Rebores up to the manufacturer’s maximum recommended rebore size are permitted.
3. Any moulded treaded tyre is permitted.
4. Standard carburettors or fuel injection as homologated to be used.
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