Engine Parts

Graves Motorsports Aprilia RSV4 / Tuono Smog Block Off Plates

Graves Motorsports Smog Block Off Plates for Aprilia RSV4 + Tuono models. Graves Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). Sold as 2 plates shown...

Yamaha R1 WORKS Clutch Spring Kit

  Yamaha R1 WORKS Kit Clutch Springs for the 07-14 R1. Kit Springs provide improved feel and a stronger spring rate for better engagement. FITMENT: Yamaha R1 2007-2014

Cylinder Base Shim .100 Thick Aluminum Suzuki Hayabusa (99-20)

Honda CBR1000RR-R Fireblade SP Smog Block Off Plates

Graves Motorsports Smog Block Off Plates for Honda CBR1000RR-R Fireblade SP. Graves Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). Sold as set shown...

Graves Motorsports R1 Clutch Kit

  Graves Motorsports WORKS R1 Clutch Kit is designed to get rid of the clutches grabbing or "lurching" tendencies on the 09-14 Yamaha R1. Kit includes 1 clutch fiber, 2 judder springs (Note: Graves WORKS Race clutch springs recommended and sold...

Billet Starter Pin Set Suzuki Hayabusa (99-02)

Direct replacement of stock starter pins The stock pins are hard and brittle. They can explode and damage the entire starting system and/or cases if starter kickback occurs in stock and/or modified engines. Precision ground and heat treated Lifetime...

Cylinder Head Gasket Hayabusa (08-26) - 11173-24F00

Cylinder Head Gasket Genuine Suzuki OEM OEM P/N: 11173-24F00

Velocity Stack Kit Z900RS / Cafe (18-25)

Direct OEM replacement Used in conjunction with two (2) OEM Z900RS stacks Designed to maximize airflow for increased peak power Click here to view installation instructions

Graves Motorsports Aprilia 660 Smog Block Off Plate

Graves Motorsports Smog Block Off Plate for Aprilia RS 660 2019 +, Tuono 660 2019 + and Tuareg 660 2019 +. Graves Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps...

Samco Hose Clamp Kit Kawasaki ZX-4RR

Samco Hose Kit CLAMP kit for the Kawasaki ZX-4RR / ZX-e4R. Fits model years 2023-2025.  Hose kit shown below sold separately.

Kawasaki ZX-4RR / Ninja 500 WORKS Clutch Spring Kit

  Kawasaki ZX-4RR / Ninja 500 / Z500 WORKS Kit Clutch Springs. Kit Springs provide improved feel and a stronger spring rate for better clutch engagement. FITMENT: Kawasaki Kawasaki ZX-4RR / ZX4-R 2023 + / Ninja 500 2025 + / Z500 2025 +

Ninja 400 WORKS Clutch Spring Kit

  Kawasaki Ninja 400 WORKS Kit Clutch Springs for the 2018-2023 models. Kit Springs provide improved feel and a stronger spring rate for better clutch engagement. FITMENT: Kawasaki Ninja 400 2018 +