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Holes may be drilled on the frame only to fix approved components (i.e. fairing
brackets, steering damper mount).
The dimensions and position of:
• Engine
• Swing arm
• Rear shock
• Suspension linkage mounting points on the frame
must remain as homologated.
Steering angle changes are permitted by fitting inserts onto the bearing seats of
the original steering head. The original bearing seat diameters on steering
head pipe may be increased to insert special bushings. The new fore and
aft position of each bearing can be a maximum +/- 6 mm in respect to the
original bearing location. No part of these special bushings may protrude
axially more than 3 mm from the original steering head pipe location. The
steering head pipe can be reinforced in the area of the bearing seats.
Welding and machining is allowed for the purpose of making these
modifications.
Modifications to the frame at the swing arm pivot area are allowed to give
a maximum of +/-5 mm of adjustment vertically and horizontally. Welding
and machining is allowed for the purpose of making this modification of
the original swing arm pivot, regardless of the technology used and the
dimensions of the component or section of the frame (i.e: cast, fabricated,
etc.).
All motorcycles must display a vehicle identification number punched on the
frame body.
Rear sub frame may be changed or altered, but the type of material must remain
as homologated or of higher specific weight.
The paint scheme is not restricted.
2.4.10.2 Front forks
The front fork in whole or part may be changed but must be the same type
homologated (leading link, telescopic, etc.).
No aftermarket or prototype electronically-controlled suspensions maybe used.
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