World Sidecar Championship rule changes.

The Sidecar Commission has decided to introduce the following modifications to the Road Racing World Championship, with immediate effect.
2.8 Technical Specifications Sidecar

2.8.21 Suspension
(...) The use of active suspensions is forbidden.

2.8.23 Drive
(...) Any traction control system is forbidden.

2.8.24 Wheels
(...) The maximum width of the front wheel rim cannot exceed 9".
The maximum width of the rim for the rear- and side wheel cannot exceed 11".

2.8.28 Air box
The air box intake size is not restricted.
An air box must be used. The air box must completely close around the induction. Bell mouths, the carburettors or throttle bodies may be entirely within the air box. The engine must have a closed breather system. The engine breather must be connected and discharge in the air box.
The air box must be constructed in such a way as to prevent any oil discharged in the air box from spilling on the track. This oil containment must hold a minimum of 1000 cc of oil. The air box must be sealed to prevent any spillage of oil or fuel.
All the air inlet into the air box must be above the lowest point of the bell mouth edges.

2.8.39 Four Stroke Engines
1. Motorcycles engines of mass production only, with a Stocksport homologation.
2. Maximum capacity: 1005 cc. For 2003 only: Engines which have been introduced on the public market until 1995: Max. capacity 1100 cc. Bore and stroke must remain as originally produced by the manufacturer. In all other points they may be modified according to the rules.
3. 4 cylinders maximum.
4. The original crankcase and cylinders may be modified, but bore and stroke must remain as originally produced by the manufacturer.
5. Crankshaft and flywheel must be original. Balancing and polishing is allowed. Welding is not allowed. The minimum weight must not be less than 95% of the original part.
6. Connecting rods may be altered or changed. The length must remain as original. The material must be of similar alloy as homologated. The minimum weight of a modified or replaced connecting rod must not be less than 95% of the original part.
7. Pistons, piston rings and piston pins may be altered or replaced, but the bore must remain as homologated.
8. The original cylinder head may be modified, welding is allowed only in case of repair (this means that it is not allowed to have each combustion chamber welded in the same positions). The number of ports, valves, the diameter of the valves must remain as originally produced by the manufacturer.
9. Valves, valve springs and valve spring retainers may be altered or replaced, but valve and valve spring material must remain the same as the original parts.
10. Carburettors may be altered or replaced. Fuel injection is free and can be replaced by carburettors.
11. Camshaft may be altered or replaced.
12. The cam drive method must remain as originally produced by the manufacturer.
13. Cam sprockets can be modified or replaced.
14. The ignition/engine control system is free.
15. The gear ratios are free. The maximum number of gears must remain as originally produced by the manufacturer.
16. The clutch system type must remain as originally produced by the manufacturer. Clutch springs, plates and basket may be altered or replaced.
17. The generator may be removed
18. Electric starter must be in place and work. The engine must start on the grid with the electric starter for the warm up lap before the start of the race.
19. The use of exotic materials such as ceramics, metal matrix (aluminium, beryllium) is not allowed.
20. Oil lubrication system is free.