The General rules section MUST be read to supplement these rules

Permitted chassis

Any Tamiya 4wd Touring Car Chassis. (This includes TRF cars)

Gearing Gearing is unlimited. 

Motors

1. As these motors are re-buildable they will remain with the competitor between events.
2. New Tamiya Superstock TZ motors will be available at any time during the season from the race organisers, or they can be purchased from your local Tamiya stockist.
3. The motors must remain un-tampered, however as these are re-buildable they may be serviced. This includes the use of Comm lathes, cleaning fluids, cotton buds and fibre sticks. Running in/comm drops and lubricants are also permitted.
4. With the TZ motors, only Tamiya replacement brushed maybe used (53581). These may NOT be serrated, drilled or cut, although edges maybe filed. The brushes must also keep the eyelet for connection. No soldering of brushes is allowed. Extra capacitors, power caps and schottky diodes maybe fitted. Maximum of 1 motor cooling fan may be used (maximum size 30mmx30mm)
5. These motors have a fixed timing, and any attempt to increase the timing of a motor is forbidden. Motors that are found to have extra advanced timing will lead to disqualification from the event.

ESC

Brushed - Choice of ESC is open. Gyros are not permitted

Brushless  - Any Brushless ESC.

Bodyshells

Any Tamiya electric touring body. Subaru Legacy B4 bodies are not permitted. All Tamiya Hop up wings are permitted

Damper parts

All Tamiya Dampers are permitted. This includes CVA, TRF and TRF Special versions. Parts are interchangeable between damper models as long as they can be fitted correctly without modification. All Tamiya on road hop up springs as well as kit springs are allowed.

Screws, nuts washers etc

All Tamiya screws, nuts, washers, connectors, turnbuckles and shafts are permitted. This includes standard parts (50xxx, 51xxx), hop up parts (53xxx), limited edition parts (49xxx) and Tamiya spare parts (7 digit numbers). Wheel hubs can be replaced with Tamiya clamp type of 4, 5 or 6mm. All Tamiya spacers, O rings, washers and shims can be used in ways other than directed in the manual for removal of play between moving parts. For the purpose of ‘handling tuning’, some parts may be omitted, otherwise the car must be built as directed in the manual. Gluing of parts together to avoid using screws is not allowed.

Other Parts

Roll bars from other Tamiya chassis’s may be used as long as they can be fitted without modification. All Tamiya servo savers, tierods and ballends are permitted. Non-Tamiya Spur gears of any size may be used, however these must be either 0.4 module/0.6 module or 48dp pitch gears. Non-Tamiya Pinions of the same pitch (04 or 06 module and 48dp) maybe used. Non Tamiya or other Tamiya hop-up bearings of the same size and type (53008, 53029 & 53066 etc) can be used. Bearing shields may not be removed.

Suspension

Suspension components can be mixed and matched, from the various systems produced by Tamiya. Swing shafts of any length (39, 42, 46 and 48mm) maybe used with these cars to allow for different suspension systems and track widths.

Lightweight Aluminium (blue) swing shafts are only to be used on the rear of the car. All non-bridge type mounts may be used upside down with spacers as come with the TRF415 XA to XD sizes, in positions where a bridge mount is required. 

Wheels

All Tamiya 26mm and 24mm (Medium-Narrow) wheels are permitted. 24mm Wheels must be used with 24mm tyres and inserts only. 26mm wheels must be used with 26mm tyres and inserts only. 1 insert per tyre only. Inserts must not be modified in anyway. Wheels must not be modified in any way other than directed, although the vent hole in the rim may be drilled to 4mm in the place of the original vent hole only. Gear ratios are to be the same for both size of wheels.

Tyres

Any Tamiya Touring Tyre. However the most popular are listed below

53433 Medium Narrow Reinforced Tyres Type A

53705 Medium Narrow Reinforced Tyres Type B3 (4pcs)

Tyres must not be modified in any way. This includes belting and rounding of the edges of the tread. Any tyre additive permitted by the hosting club. Individual tracks reserve the right to refuse the use of additives with a strong smell unless a COSHH report or sign approval can be produced to say it is safe. If this happens no action will be taken unless the additive is used again after instruction not to.

Inserts

Any Tamiya Touring inser. However the most popular are listed below

53434 Shaped Inserts (Soft), Blue

53435 Shaped Inserts (Hard), Black

53582 Shaped Inserts (Medium), Green

Only 1 insert per tyre. Inserts cannot be modified in anyway.