More Power RacingFree ShippingMore Power Racing carries the full line of Graves Motorsports accessories.

Graves Motosports Internals

Graves Motosports Internals

More Power Racing carries the full line of Graves Motorsports accessories.


Adjustable Slotted Cam Sprockets

Graves Motorsports Adjustable Slotted Cam Sprockets

Graves Motorsports Slotted Cam Sprockets allow for precise cam timing to achieve maximum performance. A must-have if you plan to build a powerful motor.

Sold in pairs.

R1 1998-03CS001 $49.95
R6 2006-08CSY-06R6-ADJ $49.95
R6 1996-05CS002 $49.95

Smog Block-Off Plates

Graves Motorsports Smog Block-Off Plates

Designed to seal off the ports on the valve cover used by the air injection system (AIS). The AIS burns unburned exhaust gases by injecting fresh air (secondary air) into the exhaust port, reducing the emission of hydrocarbons.

Once these are capped off the air injection system can be safely removed. The Smog Block Off Plates are made from CNC'ed billet aluminum and feature the Graves Motorsports “G” logo. Why remove the air injection system;
1. If you are using your motorcycle on a closed course (racing, track days, etc.) you will want to remove all unnecessary equipment from your bike for reduced weight and ease of maintenance.
2. To get an accurate Air:Fuel (A/F) ratio when dynoing the bike. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel. UThe A/F ratio is thrown off by the extra “fresh air” in the exhaust stream. By removing the air injection system you can achieve an accurate A/F ratio.
Sold in pairs.

Smog Block-Off PlugsAB007 $24.95
R1 2002-03
Smog Block-Off PlatesAB013 $39.95
GSXR1000 2005-08
Smog Block-Off PlatesAB011 $39.95
R1 2004-13
R6 2003-13
R6S 2006- 09
FZ1 - All
ZX6RR 2003- 08
ZX10R -All
ZX14R -All

Valve Spring Kit

Graves Motorsports Valve Spring Kit

Graves Motorsports Valve Spring Kit provides a 10% increase in valve seat pressure. Kit includes both intake and exhaust valve springs. For use with intake camshaft.
Old Part Number "VK001"

Fits: R1 1998-03

Price $319.95

Velocity Stack Kit

Graves Motorsports Velocity Stack Kit

This setup is specifically designed to work seamlessly with newer fuel injected sportbikes. The kit consists of two rubber intake stacks which mount directly to the stock (or Graves) airbox without modifications and is designed to delivery smooth, predictable acceleration throughout the entire powerband while creating additional horsepower and improving fuel efficiency.

Velocity Stack KitAB009 $92.95
Yamaha R6 2003-2004
Velocity Stack KitAB003 $92.95
Yamaha R1 2002-2003
Velocity Stack KitAB012 $134.95
Yamaha R1 2004-2006
Yamaha FZ1 2006-08
Velocity Stack Kit445-2063 $139.95
Yamaha R6 2005