5.2 Only the ECU/fuel injection control units supplied by the series Organiser are allowed to be fitted to the motorcycle. Electronic control units include the timing transponder, engine RPM control, and datalogger systems. No other electronic control or datalogging systems will be allowed on the motorcycle. The price of ECU unit made by each engine manufacturer must be equal to or less than JPY75,000 (about Euro650).

Chassis

6.1 Chassis will be a prototype, the design and construction of which is free within the constraints of the FIM Grand Prix Technical Regulations. The frame, swing-arm, fuel tank, seat and cowling are forbidden to use from a non-prototype as series production road-going motorcycle.
6.2 Minimum Total Weight:
135kg for 4-cylinder
130kg for 3-cylinder
125kg for 2-cylinder
6.3 No carbon brake discs.

Wheels & Tyres

7.1 No carbon composite wheels.
7.2 The maximum permitted wheel rim width is:
Front 4.00”
Rear 6.00” or 6.25”
7.3 The only permitted wheel rim diameter is:
Front 17”
Rear 17”
7.4 The number of slick tyres allocated to each rider per event will be controlled.

Materials & Construction

8.1 Construction materials will be limited to exclude expensive “non-conventional” materials and manufacturing methods (a list will be issued).
8.2 The following components must be made from iron-based alloys:
Valve springs, camshafts, crankshafts, connecting rods, piston pins, brake discs.
8.3 Engine crankcases and cylinder heads must be made from cast aluminium alloys.
8.4 Pistons must be made from an aluminium alloy.

General

9.1 Number of machines: the team can scrutineer only one motorcycle per rider.
9.2 Number of engines: a maximum of 2 complete engines per rider is permitted at any event. Teams will be required to register engine serial numbers at Technical Control on the day before the first practice.
9.3 Apart from the above regulations, all other construction criteria, dimensions and specifications are as per the FIM Grand Prix Regulations.
9.4 The engine (excluding exhaust, throttle bodies and ECU) used in a race is available to be purchased by another competitor in the same race for a fixed price of €20,000 (Euro). Such purchase request must be made in writing to Race Direction within the protest period, that is within 60 minutes after the official end of the race. The transaction and delivery will be completed immediately at the end of the 60 minute protest period and will be underwritten by IRTA. Teams refusing to sell when presented with a valid request will be disqualified.