Aftermarket inlet and exhaust valves : Yamaha R1 Forum
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Old 12-06-2012, 08:38 PM   #1
I eat my R1
Mx-Racer's Avatar
Join Date: Feb 2007
Posts: 115
Aftermarket inlet and exhaust valves

Hi All,

Am doing another head up for my drag bike and i am going to replace the valves.

Does anyone know who does after maket inlet and exhaust valves.


Over size valves

2003 R1- Lowered, stretched, 15-48 gearing, Power Commander, Dyno Jet Ignition Module, Wiseco High-Comp pistons, Ported head, VP Racing Fuel MS-109, Air-Shifter, NO AIR-BOX, custom volocity stacks, Graves Slide stops, AIS Plugs.
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Old 12-07-2012, 12:52 PM   #2
WD-40 + rear tire=wheelie
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Join Date: Apr 2008
Bikes: R1 and a couple dirt scoots
Location: Georgia
Posts: 142
kibblewhite. Intakes are pricey at $170 but the blackdiamond exhaust valves are only $30..MUCH higher quality than stock. Stock and oversize available.
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