17.5 GT Class


17.5 GT Class is not a sanctioned class and may not be run at all special events. Should you wish to compete at special events we recommend selection 21.5 Sportsman, 13.5 Stock, or Open. This class is based on a gentleman agreement to run the below specifications at club level.




1/10th Scale :


Four-wheel drive is allowed. Chassis must have independent suspension on all four wheels.
Each driven wheel must have a flexible joint, eg: dog bone/s or universal joint/s in its drive shaft. Drive train and suspension design is free from restriction.
Flat Pan (1/12th and 1/10th Track Style) chassis are not allowed.
The Chassis must not be shaped to gain an aerodynamic advantage In principle the underside of the chassis must be flat and parallel to the ground along the entire length of the body-shell. Aerodynamic shaped parts (splitters / diffusers /tunnels/etc)are NOT be fitted to the chassis.


Motor :

uchMore Racing - Fixed Timing Spec Motor. FLETA ZX V2 17.5T with standard rota - Brush-less Motor with Zero timing.


Motor Modifications:

               NO! modifications are allowed in any way at all. This includes any enhancements, improvements, tuning up, shimming, ceramic Bearings, Timing and winding alterations.The Motor to be run is out of the box as is and tampering in any way at all is NOT ALLOWED!.

               General cleaning of motor and lubing of original bearings is allowed. 

 Gearing :
Gearing - is to be set between 3.6 Min to 4.0 Max.

 Body Shell :
2 Door GT Style Bodies ONLY - 190mm 


               Any 190mm GT1, 2 and 3 body style. CAN-AM, LMP1, LMP2 (Prototype) or IMSA style bodies, similar to 1/12th ,1/10th pan or 1/8th bodies using an integrated wing are ILLEGAL.

Example Not Allowed:
Porsche 962 style bodies or LeMans LMP1 and LMP2 style. 

               No fantasy or concept vehicles. If it’s not a car brand used in GT, it’s not legal.
Eligibility of new shells will be at the discretion of the race director and rules committee. Current shells available in the market are currently allowed.

Tyres :

Any brand 36 Rubber tyres. (24mm)

Hop-Ups :

Any hop up available from any manufacturer.

Batteries :

Any 2 cell Hard-cased approved 7.4 Lipo packs as listed on the ROAR or EFRA websites.


Weight :

Minimum weight 1320 grams 



Updated: 08/01/2022


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