| YAMAHA
TIMBERWOLF / BEAR TRACKER YTM 200 / 225 / 250E / TT225 / XT200 2v |
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .360 | 258 | 236 | 40a | Bolt-in cam improves overall power. | N/A |
80-231 |
N/A |
| .395 | 260 | 238 | 89 | Good overall power. Must use valve spring kit. | N/A |
80-261 |
N/A |
| .395 | 270 | 248 | 89a | Strong mid range and top end power. Must use valve spring kit. | N/A |
80-271 |
N/A |
| Cam Core | Please specify year and model when ordering. 4WD OR 2WD. |
CC-Y00 |
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| Performance Valve Spring Kit | Kit includes performance dual springs and Aluminum retainers. |
VC-Y20 |
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| YAMAHA
WARRIOR 350 (1986-2004), WOLVERINE (1995-2005), BIG BEAR YFM350 (1990-1999), KODIAK 400 (1993-1999), BIG BEAR YFM400 (2000-2002) |
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .390 | 274 | 244 | 88 | Improves overall power. Must use valve spring kit. | N/A | 80-161 |
N/A |
| .430 | 286 | 258 | 84 | Tremendous mid and top end power for racing engines. Must use valve spring kit. | N/A | 80-171 |
N/A |
| Please Read This Important Information | |||||||
| Cam Core | Please specify year and model when ordering. | CC-Y04 |
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| Cam Gear | Replacement stock cam gear | CG-Y05 |
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| Intake Valve | One piece stainless steel, standard intake size 40mm. | IV-Y05 |
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| Oversized Intake Valve | One piece stainless steel, oversized intake valve 41mm. Black nitroneg stems. Price per valve. Fits Warrior. | OV-Y05 |
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| Exhaust Valve | One piece stainless steel, standard exhaust valve size 34mm. Black nitroneg stems. Price per valve. Fits Warrior. | EV-Y06 |
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| Performance Valve Spring Kit | Kit includes performance dual springs, aluminum retainers, keepers, and shims. | VC-Y25 |
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| Racing Valve Spring Kit | Kit includes performance dual springs, titanium retainers, HT steel collars and HT steel keepers. | VC-Y30 |
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| Hardwelded Rocker Arms | We will hardweld and precision grind your worn out/new rockers for a longer wearing surface. Recommended with ALL profiles. Cost per rocker arm. | HR-Y01 |
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| Rocker Arm Core | Please specify year and model when ordering. | RC-Y01 | |||||
| RAPTOR 350 (2004-2005), BRUIN 350 (2005) 2v | |||||||
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .390 | 274 | 244 | 88 | Improves overall power. Must use valve spring kit. | N/A | 80-641 |
N/A |
| .430 | 286 | 258 | 84 | Tremendous mid and top end power for racing engines. Must use valve spring kit. | N/A | 80-651 |
N/A |
| Please Read This Important Information | |||||||
| Cam Core | Please specify year and model when ordering. For Raptor / Bruin only! | CC-Y19 | |||||
| Cam Gear | Replacement stock cam gear | CG-Y05 |
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| Performance Valve Spring Kit | Kit includes performance dual springs, aluminum retainers, keepers, and shims. | VC-Y25 |
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| Racing Valve Spring Kit | Kit includes performance dual springs, titanium retainers, HT steel collars and HT steel keepers. | VC-Y30 |
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| Hardwelded Rocker Arms | We will hardweld and precision grind your worn out/new rockers for a longer wearing surface. Recommended with ALL profiles. Cost per rocker arm. | HR-Y01 |
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| Rocker Arm Core | Please specify year and model when ordering. | RC-Y01 | |||||
| YAMAHA KODIAK 400 (2000-2004), KODIAK 450 (2003-2004) 2v | |||||||
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .390 | 274 | 244 | 88 | Improves overall power. Must use valve spring kit. | N/A | 80-391 |
N/A |
| Cam Core | Please specify year and model when ordering. | CC-Y06 |
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| Cam Gear | Replacement stock cam gear. | CG-Y06 |
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| Performance Valve Spring Kit | Kit includes performance dual springs, aluminum retainers, keepers, and shims. | VC-Y25 |
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| Racing Valve Spring Kit | Kit includes performance dual springs, titanium retainers, HT steel collars and HT steel keepers. | VC-Y30 |
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| YAMAHA YFZ 450 (2003-2005) 5v | |||||||
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .360/.338 | 266/268 | 244/247 | 297/192 | Torque profile designed to bolt into a stock engine. Excellent throttle response. Exhaust cam can be retarded 1 tooth. Spring kit recommended if using stainless valves. | N/A | 80-581 |
N/A |
| .356/.338 | 277/281 | 256/257 | 187/159e | Bolt in profile increases overall power. Exhaust can be retarded 1 tooth. Spring kit recommended if using stainless valves. | N/A | 80-561 |
N/A |
| .356 | 282 | 261 | 187+2.5 | Race profile. Increases torque with added RPM power. Exhaust can be retarded 1 tooth. Spring kit recommended if using stainless valves. | N/A | 80-571 |
N/A |
| Cam Core | Please specify year and model when ordering. | CC-Y15 |
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| Intake Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Standard intake size 27mm. Cost per valve. | IV-Y06 |
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| Intake Valve OS | One piece stainless steel and swirl polished. Black nitroneg stem. OS intake size 28mm. Cost per valve. | IV-Y08 |
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| Intake Valve Center | One piece stainless steel and swirl polished. Black nitroneg stem. Standard intake size 27mm. Cost per valve. | IV-Y09 |
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| Intake Valve Center OS | One piece stainless steel and swirl polished. Black nitroneg stem. OS intake size 28mm. Cost per valve. | IV-Y10 |
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| Exhaust Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Standard size 28mm. Cost per valve. | EV-Y11 |
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| OS Exhaust Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Oversized 29mm. Cost per valve. | EV-Y12 |
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| Racing Valve Spring Kit | Fits Yamaha YZ450/YZ440 engines. Kit includes dual springs, titanium retainers, valve stem seals and lower HT collars. Required if using stainless steel valves. | VC-Y46 | |||||
| YAMAHA YFM 600 GRIZZLY (1998-2001) 4v | |||||||
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .375/.365 | 259 | 238 | 87 | Improves performance throughout RPM range. Recommend to use with high compression piston. Stock springs OK. | N/A | 80-351 |
N/A |
| Cam Core | Please specify year and model when ordering. | CC-Y05 |
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| YAMAHA YFM 660 GRIZZLY (2002-2005) 5v | |||||||
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| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .340/.355 | 260 | 232 | 461/496 | Bolt in cam increases overall power. Recommend to use with higher compression piston. Stock springs OK. | N/A | 80-411 |
N/A |
| Cam Core | Please specify year and model when ordering. | CC-Y07 |
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| Hardwelded Rocker Arm | We will hardweld and precision grind your worn out / new rockers for a longer wearing surface. Recommended with ALL profiles. Cost per rocker arm. | HR-Y00 |
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| Rocker Arm Core | Please specify year and model when ordering. Cost per rocker arm. | RC-Y00 |
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| YAMAHA RAPTOR 660 (2001-2005) 5v | |||||||
|---|---|---|---|---|---|---|---|
| VALVE LIFT |
DURATION IN DEGREES |
DURATION @.050 IN DEGREES |
GRIND NUMBER |
DESCRIPTION | REGRIND | HARD WELD |
NEW CAM |
| .340/355 | 260 | 232 | 461/496 | Bolt in cam increases overall power. Can be used with higher compression piston. Stock springs OK. Includes compression release. | N/A | 80-411 |
N/A |
| .340/.355 | 270 | 242 | 696/697 | Race profile. Recommend higher compression piston, exhaust, and performance spring kit. Includes compression release. | N/A | 80-421 |
N/A |
| .365/.365 | 275/275 | 248/245 | 736/737 | Race profile designed for extreme acceleration with added mid and upper end performance. Must be used with higher compression piston, exhaust, and performance spring kit. Includes compression release. | N/A | 80-501 |
N/A |
| .452/.424 | 292/289 | 260/257 | 685 | Race profile designed for mid and top end performance. Must be used with a higher compression piston, exhaust, performance spring kit, and shortened valve guides. Minimum clearance .030. Must check all clearances. Includes compression release. | N/A | 80-541 |
N/A |
| Please Read This Important Information | |||||||
| Cam Core | Please specify year and model when ordering. | CC-Y07 |
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| Racing Valve Spring Kit | Kit includes performance springs, titanium retainers and base washers. Installs @ 1.200 to 1.210. OK up to .450" valve lift. | VC-Y80 |
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| Intake Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Standard intake size 30mm. |
IV-Y02 |
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| Oversized Intake Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Oversized intake size 31mm. |
OV-Y02 |
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| Exhaust Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Standard exhaust size 32mm. |
EV-Y03 |
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| Oversized Exhaust Valve | One piece stainless steel and swirl polished. Black nitroneg stem. Oversized exhaust size 33mm. |
OV-Y03 |
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| Shortened Valve Guides | Made from Ampco 45 material for longer wear, Adds additional retainer to guide seal clearance. Cost per set (5) |
VG-Y00 |
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| Racing Valve Spring Kit | Kit includes valve springs, titanium retainers and base washers. Installs @ 1.200 to 1.210. OK up to .450" valve lift. | VC-Y80 | |||||
| Hardwelded Rocker | We will hardweld and precision grind your worn out / new rockers for a longer wearing surface. Recommended with ALL profiles. Cost per rocker arm. |
HR-Y00 |
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| Rocker Arm Core | Please specify year and model when ordering. Cost per rocker arm. | ||||||