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High-grade carbon steel replacement rear wheel sprocket
DB at Idle 103 / DB at 5000rpm : 104
Sound Insert with Spark Arrestor DB @ 5000 RPM 98
ECU remapping is required
Seams are hand pounded after stamping process for that factory look
IN STOCK Graves motorsports Kawasaki Ninja 400 + Z400 + Ninja 500 + Z500 Velocity Stacks ABK-EX4-VE Relay High-grade carbon steel replacement rearGraves Motorsports Kawasaki Ninja 400 Z400 Ninja 500 Z500 Velocity Stack Kit. Developed through our in house race programs. These stacks create a 6% power increase for $129. 95 no tuning required! 1st & 2nd Charts show a completely stock bike compared to a bike equipped with the Graves' velocity stacks, WORKS2 full exhaust, DNA air filter and Graves FTEcu flash 3rd Dyno chart displays a completely stock bike with and without the velocity stacks no