Yamaha Warrior Big Bore Kit

$17.99 Genuine James 3 7/8 in. Big Bore Kit, .045 in. Head/Base Gaskets JGI1678799
Manufacturer: Genuine James
Dennis Kirk Part #: H26114
Genuine James 3 7/8 in. Big Bore Kit, .045 in. Head/Base Gaskets: Manufacturer part # JGI1678799 - Includes matching head and base gaskets and O-rings where applicable. Made in the U.S.A.. For models listed with 95 in. big bore.. JGI1678799
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Yamaha Warrior Big Bore Kit

$17.99 Genuine James 3 7/8 in. Big Bore Kit, .036 in. Head/Base Gaskets JGI1678799X
Manufacturer: Genuine James
Dennis Kirk Part #: H26116
Genuine James 3 7/8 in. Big Bore Kit, .036 in. Head/Base Gaskets: Manufacturer part # JGI1678799X - Includes matching head and base gaskets and O-rings where applicable. Made in the U.S.A.. For models listed with 95 in. big bore.. JGI1678799X
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Yamaha Warrior Big Bore Kit

$121.99 Drag Specialties Big Bore Kit 13322A
Manufacturer: Drag Specialties
Dennis Kirk Part #: H13900
Drag Specialties Big Bore Kit: Manufacturer part # 13322A - Upgrade your 883 or 1100 XL to a blistering 1200cc with this Big Bore kit. It comes ready to install with pistons, rings, all necessary gaskets, plus a special combustion chamber template for proper installation. Replaces OEM NOS. 16140-87 and 25629-88. , NOTE: Will only work on 91-03 models if gasket kit H26-341 is purchased.. 13322A
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Yamaha Warrior Big Bore Kit

$632.99 L.A. Sleeve 145cc Big Bore Kit NIKS4145
Manufacturer: L.A. Sleeve
Dennis Kirk Part #: 149226
L.A. Sleeve 145cc Big Bore Kit: Manufacturer part # NIKS4145 - Kit includes Pro-Cross billet aluminum cylinder, 145cc piston, rings, pin, clips, gaskets and high performance Web Cam designed for off-road Big Bore kit. Aftermarket billet aluminum cylinder has larger cooling fins and mounts for aftermarket skid plate. Stock carburetor can be used (jets included). Uses stock head. Minor crankcase clean-up may be needed.. NIKS4145
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Yamaha Warrior Big Bore Kit

$443.99 L.A. Sleeve 110cc Big Bore Kit NIKS4110
Manufacturer: L.A. Sleeve
Dennis Kirk Part #: 149227
L.A. Sleeve 110cc Big Bore Kit: Manufacturer part # NIKS4110 - Kit includes Pro-Cross billet aluminum cylinder, 110cc piston, rings, pin, clips, gaskets. Aftermarket billet aluminum cylinder has larger cooling fins and mounts for aftermarket skid plate. Stock carburetor can be used (jets included). Easy bolt-on installation; no special requirements; uses stock head.. NIKS4110
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Yamaha Warrior Big Bore Kit

$380.99 L.A. Sleeve 120cc Big Bore Kit LAS5197B
Manufacturer: L.A. Sleeve
Dennis Kirk Part #: 149228
L.A. Sleeve 120cc Big Bore Kit: Manufacturer part # LAS5197B - Kit includes 120cc piston, rings, pin, clips, gaskets and high performance Web Cam designed for off-road Big Bore kit. Stock carburetor can be used (jets included). Uses stock head. Minor crankcase clean-up may be needed.. LAS5197B
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Yamaha Warrior Big Bore Kit

$617.99 BBR Motorsports 88CC Super Pro Big Bore Kit 411-HXR-5206
Manufacturer: BBR Motorsports
Dennis Kirk Part #: 149989
BBR Motorsports 88CC Super Pro Big Bore Kit: Manufacturer part # 411-HXR-5206 - The ultimate 88cc big bore kit with BBR custom aluminum cylinder, big valve/big port cylinder head and camshaft. Cylinder retains skidplate mounts, and comes with everything you need to assemble including: BBR Big Valve/Big Port Cylinder Head; BBR Billet Camshaft cover (a black and a red cover is included so you can pick which color you want to use); 52mm 11:1 piston, rings, pin, clips; 18mm Carb Kit with throttle and cable; assorted main and pilot jets; performance manifold and air filter; BBR Aluminum Cylinder; BBR HD Clutch Springs; exclusive BBR Motocross grind Camshaft; high volume oil pump; complete top end gasket set and detailed instructions.. 411-HXR-5206
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Yamaha Warrior Big Bore Kit

$122.99 BBR Motorsports Replacement 160cc Big Bore Kit 411-KLX-1611
Manufacturer: BBR Motorsports
Dennis Kirk Part #: 131416
BBR Motorsports Replacement 160cc Big Bore Kit: Manufacturer part # 411-KLX-1611 - Exact replacement for BBR 160cc big bore kit. Replacement piston kit includes piston, rings, pin and clips.. 411-KLX-1611
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Yamaha Warrior Big Bore Kit

$632.99 L.A. Sleeve 88cc Big Bore Kit NIKS8852
Manufacturer: L.A. Sleeve
Dennis Kirk Part #: 148749
L.A. Sleeve 88cc Big Bore Kit: Manufacturer part # NIKS8852 - Kit includes Pro-Cross billet aluminum cylinder, 88cc piston, rings, pin, clips, gaskets and high performance Web Cam designed for off-road Big Bore kit. Aftermarket billet aluminum cylinder has larger cooling fins and mounts for aftermarket skid plate. Stock carburetor can be used. Easy bolt-on installation; no special requirements; uses stock head. NOTE: No jet kit is included. NIKS8852
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Yamaha Warrior Big Bore Kit

$1882.99 Delkron Big Bore Top End Kit - 95 in. D3301
Manufacturer: Delkron
Dennis Kirk Part #: 149875
Delkron Big Bore Top End Kit - 95 in.: Manufacturer part # D3301 - Top End Kits feature Delkron Hi-Flow assembled cylinder heads and aluminum casted cylinders with centrifugally spun cast-iron liners for better heat conductivity. Cylinders honed to match pistons. Bore sizes from 3 7/8 in. to 4 1/8 in.. Compression ratio of 10.5:1 on either kit. Includes a flange mount manifold, Cometic MLS gasket kit and Ross Racing Piston kit. Accept stock rocker arms. Available in natural or black finish. Made in the U.S.A.. , NOTE: This item ships 3 or 4 days after the order is placed.. D3301
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Yamaha Warrior Big Bore Kit

$1882.99 Delkron Big Bore Top End Kit - 107 in. D3303
Manufacturer: Delkron
Dennis Kirk Part #: 149877
Delkron Big Bore Top End Kit - 107 in.: Manufacturer part # D3303 - Top End Kits feature Delkron Hi-Flow assembled cylinder heads and aluminum casted cylinders with centrifugally spun cast-iron liners for better heat conductivity. Cylinders honed to match pistons. Bore size 4 1/8" (107" kits require case boring). Compression ratio of 10.5:1. Includes a flange mount manifold, Cometic MLS gasket kit and Ross Racing Piston kit. Accept stock rocker arms. Available in natural or black finish. Made in the U.S.A.. , NOTE: This item ships 3 or 4 days after the order is placed.. D3303
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Yamaha Warrior Big Bore Kit

$156.99 Wiseco PK Piston Kit - 52mm Supermini Big Bore PK1185
Manufacturer: Wiseco
Dennis Kirk Part #: PK1185
Wiseco PK Piston Kit - 52mm Supermini Big Bore: Manufacturer part # PK1185 - Contain all the necessary components for overboring or rebuilding your top end. Kit includes: Piston, Rings, Wrist Pins, Circlips and Top End Gasket Kit. Cylinder sleeves must be purchased separately.. PK1185
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Yamaha Warrior Big Bore Kit

Yamaha Warrior Big Bore Kit