2025 Classes of Competition
Motorcycle Sportsmen of Queensland are a Motorcycling Australia (MA) affiliated club and all club events are conducted under MA permits.
If you have a machine that does not fall into the prescribed classes, please contact [email protected] for more information. We can help you find the correct class!
The structures of these classes are formulated on numbers of machines entered in 2023 & 2024 events, machine capacities, like and fair racing ability of machines, and is centred around Motorcycling Australia Manual of Motorcycle Sport – for a digital copy please follow this link.
The Superbike, Supersport, and Supersport 300 classes are in line with the current ASBK class regulations. Please refer to this link for more information.
All classes and categories labelled SDRRC will have individual championship status at our premier events – The Southern Downs Road Racing Championship. This championship will be conducted throughout 2025 at multiple tracks and on multiple track configurations.
PLEASE NOTE: Carbon wheels are not permitted for any class in any race at any event. As per MA 2024 MOMS section 6.17.11.1.
Superbike (SDRRC)
- 750-1000CC 4CYL 4V 4T
- 750-1100CC 3CYL 4V 4T
- 850-1300 2CYL 4V 4T
AS PER 2024 ASBK SPORTING REGULATIONS SECTION 4.24 & GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D
Supersport (SDRRC)
- 450-640CC 4CYL 4V 4T
- 500-675CC 3CYL 4V 4T
- 600-750CC 2CYL 4V 4T
AS PER 2024 ASBK SPORTING REGULATIONS SECTION 4.25 & GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D
Supersport 300 (SDRRC)
- Kawasaki Ninja 400
- Yamaha YZF R3
- KTM RC390
AS PER 2024 ASBK SPORTING REGULATIONS SECTION 4.26 & GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D
Sporties Superbike (SDRRC)
- 750-1100CC 4CYL 4V 4T
- 900-1200CC 3CYL 4V 4T
- 960-1300 2CYL 4V 4T
GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D
Sporties Supersport (SDRRC)
- 450-640CC 4CYL 4V 4T
- 650-895CC 3CYL 4V 4T
- 650-960CC 2CYL 4V 4T
GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Sporties Supersport 300 (SDRRC)
- UP TO 401CC 2CYL 4V 4T
- UPTO 399CC 1CYL 4V 4T
- UPTO 251CC 4CYL 4V 4T
PLEASE NOTE THIS IS A PRODUCTION CLASS. ALL MACHINES MUST BE FITTED WITH AN ADR COMPLIANCE PLATE. GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Premodern Superbike (SDRRC)
MACHINES ADR COMPLIED BETWEEN SEPT 2000 – END OF AUG 2011 (MODELS NOT UPDATED BUT CONTINUED AFTER CUT OFF STILL ELIGIBLE)
- 681-1200CC 4V 4T MULTICYLINDER
Modifications open provided they were originally intended for the period and/or motorcycle originally. Motorcycles must always still comply with the GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Premodern Supersport (SDRRC)
MACHINES ADR COMPLIED BETWEEN SEPT 2000 – END OF AUG 2011 (MODELS NOT UPDATED BUT CONTINUED AFTER CUT OFF STILL ELIGIBLE)
- 450-640CC 4CYL 4V 4T
- 500-680CC 3CYL 4V 4T
- 500-750CC 2 CYL 4V 4T
- 750-1100CC 2CYL 2V 4T AIR COOLED
Modifications open provided they were originally intended for the period and/or motorcycle originally. Motorcycles must always still comply with the GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Pre-2000 Superbike (SDRRC)
MACHINES ADR COMPLIED UP UNTIL END OF AUG 2000 (MODELS NOT UPDATED BUT CONTINUED AFTER CUT OFF STILL ELIGBLE)
- 601-1300CC 4V 4T MULTICYLINDER
- 500CC 2T MULTICYLINDER
Modifications open provided they were originally intended for the period and/or motorcycle originally. Motorcycles must always still comply with the GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Pre-2000 Supersport (SDRRC)
MACHINES ADR COMPLIED UP UNTIL END OF AUG 2000 (MODELS NOT UPDATED BUT CONTINUED AFTER CUT OFF STILL ELIGIBLE)
- 450-600CC 4CYL 4V 4T
- 400-750CC 2 CYL 4V 4T
- UP TO 300CC 2 CYL 2T
- 400-750CC 4CYL 4V 4T AIR COOLED
- 750-905CC 2CYL 2V 4T AIR COOLED
Modifications open provided they were originally intended for the period and/or motorcycle originally. Motorcycles must always still comply with the GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Formula STG (Supertwins Group) (SDRRC)
- 450-700cc 2CYL 4V 4T watercooled – Supertwins
- 252-450cc 4CYL 4V 4T watercooled
- up to 905cc 1CYL 4V 4T watercooled (incl moto 3 type machines)
- up to 300cc 2CYL 2T watercooled
- up to 500cc 1CYL 2T watercooled
- up to 905cc 2CYL 2V 4T aircooled
- up to 1203cc 2CYL 2V pushrod air cooled – Roaring Sporties Superstock
Supertwins:
- All machines except Aprilia RS660:
- Engine modifications permitted provided commercially available for machine.
- Suspension, Brake, and Wheel modifications permitted provided commercially available for machine.
- Forks, Wheels, and Brake assemblies may be substituted for other components provided they are of OEM commercially available origin.
- Bodywork modifications open provided securely fitted with minimum 4 points of fixture per panel.
- Aprilia RS660 specific rules:
- Engine internals, Airbox, Throttle Bodies and Velocity Stacks must remain as per OEM.
- Fork outer tubes must remain OEM – aftermarket fork internals permitted .
- Aftermarket rear suspension units permitted.
- Wheels and Brake Callipers to remain OEM – aftermarket Brake Master Cylinder, Brake Pads and Brake Lines permitted.
Roaring Sporties Superstock:
- 1203cc limit – Modified Sportster, Buell 2V, XR1200, XG750 Streetrods
- Aftermarket pistons/cams permitted.
- Exhaust Baffle compulsory.
- Pump fuel only (NO E85) max #98 Unleaded.
- 40MM CV Stock Carb (Jetting optional).
- 46MM Injected throttle body.
- Air Filter Element Compulsory.
- Suspension modifications permitted including aftermarket items commercially available.
- Wheels/Brake modifications permitted including aftermarket items commercially available.
- ALL bikes must run TREADED Tyres (Wets permitted).
- Aftermarket Handlebars/footrests permitted.
- Aftermarket Rear Ducktail/Seat permitted.
- Front mudguards compulsory.
More info : https://www.facebook.com/roaringsportiesAustralia/
ALL OTHER ELIGIBLE MACHINES FOR STG – MODIFICATIONS OPEN.
Motorcycles must always still comply with the GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Supermotard (SDRRC)
- UP TO 500CC 1 CYL 4V 4T
GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
Queensland Junior Cup (QJC)
- 155CC 1 CYL 4V 4T
SPEC JUNIOR SERIES. REFER TO OJC CUP REGULATIONS
Contact [email protected] for further information.
Sidecars (SDRRC)
- Combined F1 and F2 Sidecars
AS PER 2024 MA MOMS SIDECAR CLASS REGULATIONS (PAGES 48-53 SECTION 6F) & GENERAL TECHNICAL SPECIFICATIONS FOUND IN 2024 MA MOMS PAGE 37 SECTION 6D.
2025 Race Grids
The 2025 grid organisation is as follows. Please note which classes will be on the track at the same time, this will limit some of cross entering combinations out of necessity. Qualification and race order on the weekend may vary due to external conditions such as weather and timing.
Grid 1
- Supersport 300
- Sporties Supersport 300
Grid 2
- Supersport
- Sporties Supersport
Grid 3
- Superbike
- Sporties Superbike
Grid 4
- Pre 2000 Supersport
- Premodern Supersport
Grid 5
- Pre 2000 Superbike
- Premodern Superbike
Grid 6
- Supertwin Group
- Supermotards
Grid 7
- Sidecars, all classes
Grid 8
- Queensland Junior Cup
Race Preparing Your Bike
Check out our visual guide for the person who wants to race-prep their bike.
Use this as a companion to the requirements set out in the Road Race chapter of the General Competition Rules available here.
