MOOSE RACING Dual Sprocket - Silver - 51 Tooth 1210-251-51-11X Derby Cover Spacer Includes a resonator to reduce

Includes a resonator to reduce offensive exhaust tones and a plate for the exhaust valve to eliminate CEL on the dash (where applicable)

Precision-ground A-arm shaft manufactured from 52100 heat-treated bearing steel for improved performance and extended life

The RPT designation comes from adapting the design from Cobra's Race-Pro 4" muffler into this three-inch size

2005-2007 KTM 400 EXC Racing 4-Stroke - - 2001-2002

Works with both stock and aftermarket exhaust systems

MOOSE RACING Dual Sprocket - Silver - 51 Tooth 1210-251-51-11X Derby Cover Spacer Includes a resonator to reduceDesigned to outlast standard aluminum rear sprockets and is much lighter than steel rear sprockets Inner ring is made from 7075 T6 aluminum and the outer ring is made from heavy duty steel Self cleaning mud grooves between each tooth to prevent dirt build up