quality. service. price.
New and Reconditioned Parts
free shipping on all orders over $100 in the USA
Cylinders
NICHE Top End Kit
$250
Our version of an imported top end kit. We couple a NICHE cylinder with top quality Wossner components and inspect the critical tolerances of the cylinder before it ships. This is a less expensive option to having your cylinder bored or buying a used OEM cylinder. Kit includes 66mm piston kit, Wossner top end gaskets, Wossner top end bearing, studs and nuts.
Blaster Cylinder Head
$165
Did you know that our head modification adds 3-5 HP depending on supporting modifications. This works with bore up to 68.25 mm. Also works with stock stroke and 3 mm with spacer plate. Requires fresh high test fuel.
OEM Blaster Cylinder
$485
66mm Sleeved OEM Blaster cylinder with Wossner piston kit, Wossner top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, machined top and bottom gasket surfaces, torque tested.
out of stock
66mm OEM Ported Blaster Cylinder
$590
66mm Sleeved, stage 1 trail ported, OEM Blaster cylinder with Wossner piston kit, Wossner top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, machined top and bottom gasket surfaces
out of stock
66.5mm OEM Blaster Cylinder
$405
66.5mm OEM Blaster cylinder with Wossner piston kit, OEM top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, torque tested
Trail Ported Blaster Cylinder Kit
$425
Fast trail ported import cylinder bored to 66.5mm with Wossner Piston, top end gaskets, top end bearing, and flange nuts.
67.5mm OEM Blaster Cylinder
$380
67.5mm OEM Blaster cylinder with Wossner piston kit, OEM top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, torque tested
68mm OEM Blaster Cylinder
$370
68mm OEM Blaster cylinder with Wossner piston kit, OEM top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, torque tested
67mm OEM Blaster Cylinder
$390
67mm OEM Blaster cylinder with Wossner piston kit, OEM top end Gaskets, new studs, 10 flange nuts, top end bearing, honed with torque plate, torque tested
Aggressive Trail Ported Blaster Cylinder
$550
Aggressive trail ported Blaster cylinder with 68mm bore. Comes with OEM gaskets, Wossner forged piston kit, top end bearing, ten 8mm flange nuts.
out of stock
Vito's 240 Big Bore Kit
$659
Porting Available! Call the shop
This includes:
- Big Bore 240cc cylinder kit - 72.00mm
- Oversized head to accommodate the larger piston
- Piston with rings and bearings
- Studs
- Complete re-jet kit with jets and needle
- Full top end gasket kit
This is for a complete YAMAHA BLASTER YFS200 72.00mm big bore kit made by VITO'S PERFORMANCE
This is a bolt on kit, that has shown proven dyno results of 34hp or more!
This has high performance port timing, triple exhaust, and four intake ports!
Crazy power over stock setup
This kit has been on the market for a LONG time, and still reigns as KING for a reason: HUGE power gains and awesome reliability.
This can be used with our 3mm stroker crankshafts as well for even more power (the cases do NOT need to be machined for the crank to fit)
Crankshafts/Crankshaft Kits
Yamaha Blaster Crankshaft Kit
$365
Rebuilt OEM Blaster crankshaft kit features:
Crankshaft, Bottom end gaskets and seals, Clutch hub and balance shaft lock washers, Crank Key, Kick idle gear snap rings, and Koyo main bearings
Vito's +3mm Stroker Crankshaft TRUED!
$260
Vito's +3mm stroker crankshaft. Crankshaft has been checked and trued if necessary. Does not come with gaskets and spacer plate.
This is made by VITO'S RACING
Wrist pin bearings included, and are also brand new silver cage
These are ready to install!
Slight filing to the top of the crankcase may be required
This drops into the OEM factory cases without major modifications (no need to trench out your cases).
This is a direct for the Vito's Performance 240 BIG BORE cylinder kits
Vitos Standard Stroke Crankshaft
$229
This is made by VITO'S PERFORMANCE RACING
This is a factory drop in replacement - same size as OEM Yamaha - 57mm stroke
fits any year 1988-2006 Yamaha Blaster YFS200
Also fits any cylinder bore, 66-73mm bore
This is brand new, Wrist pin bearings included and are also brand-new silver cage
Electrical
NGK B8EG Racing Plug
$6.95
NGK Racing series plugs are engineered to withstand the harshest engine conditions
Special insulator nose configurations improve throttle response
Corrugated ribs prevent flashover
Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
Copper core aids in heat removal
Triple seals prevent leakage
Engine Bearings and Gaskets
Yamaha Blaster Crankshaft Bearings
$65
KOYO Main Bearings
OEM Top End Gasket Kit
$65
Kit includes factory head, base, intake, and exhaust gasket
Counter Balance Shaft Bearings
$50
Two OEM bearings
Transmission Bearing Kit
$165
Includes two OEM main shaft and two counter shaft transmission bearing
Vito's 240 Head Gasket
$24.99
Vito's .020 Base Gasket
$12.99
CT Head Gasket
$39.99
Head gasket for the CT240 cylinder
Bottom End Gaskets and Seals
$53.99
Rubber Grommet Kit
$18
Oil Pump Delete Kit
$36
Suspension and Wheel Bearings
Pro-X Rear Axle Bearings
$26.99
1988-2002
Pro-X Front Wheel Bearings
$18.95
2 sets required
2003-2006
Pro-X Rear Axle Bearing Kit
$26.99
2003-2006
Niche Tie Rods
$22
2 per pack
Nich Tie Rod Ends
$32
4 per pack
Pro-X Swing Arm Bearing Kit
$55.95
All Years
Bronco Rear Axle Bearings
$22.95
1988-2002
Bronco Front Wheel Bearing Kit
$12.95
1988-2002
2 required
Aluminum Steering Stem Bushing
$19.99
The Original KOR Yamaha Blaster Rear Shock Conversion Bushings with Hardware
$30
Fits all years. Comes with two bushings, nut, and bolt.
These were designed and originated by Ken OConnor Racing and have since been copied and sold by many companies.
These rear shock conversion bushings are designed to be able to use KFX400, LTZ400, 400EX, 450R and 250R shocks. You may have to drill the bottom of the shock to 12mm to fit the bottom 12mm pin.
Do not use the Chinese poly, or copycat aluminum Bushings, they will not hold up. Demand the original. Demand the best.
Bushings are steel and can be welded to the frame if desired. Some slight modifications may be required.
Piston Kits
Wossner Forged Piston Kit
$95-$100
Wossner forged piston kit. Complete with piston, rings, pin, clips. Be sure to order the correct size for your cylinder. NO RETURNS
Pro-X Piston Kit
$95-$100
Pro-X cast piston kit
Lightened
Lightened Counter Balance Shaft
$70
Yamaha Blaster Lightened Flywheel
$180
Tools
Exhaust Spring Hook
$12.95
Used for attaching the exhaust springs from the engine to the pipe.
Torque Wrench Adapter
$22
Used to torque cylinder base nuts.
12 and 14 mm
Gear Jammer
$17.95
Used to keep primary gears from turning while tightening
Motion Pro Flywheel Puller
$21
Cable Luber
$15
Leak Down Tester
$72
"Pressure testing is only half the battle."
Uses vacuum and pressure to test your two-stroke engine.
Comes with intake block offs, exhaust plate, vacuum/pressure tester
Block Off Plate
$27
Block of plate for leak testing two-stroke
Fits Blaster, and most 2 stud exhausts
Cables and Controls
Lever Assembly Clutch, black
$21.99
1988-2006
Part number: 14-0104
- Replacement for Kawasaki, Suzuki and Yamaha clutch lever assembly on MX bikes
- Meets or exceeds OEM quality
- black finish
- Not for use with hydraulic brakes or clutches
- Perch adjuster is designed for an 8mm O.D. housing end fitting
- Lever is designed for an 8mm diameter x 10mm length barrel
- Exposed wire length when hooked up needs to be 40mm to 49mm
- Fits 7/8 inch diameter handlebars
Lever Assembly Clutch, Polished
$20.99
1988-2006
Part number: 14-0106
- Replacement for Kawasaki, Suzuki and Yamaha clutch lever assembly on MX bikes
- Meets or exceeds OEM quality
- Polished aluminum finish
- Not for use with hydraulic brakes or clutches
- Perch adjuster is designed for an 8mm O.D. housing end fitting
- Lever is designed for an 8mm diameter x 10mm length barrel
- Exposed wire length when hooked up needs to be 40mm to 49mm
- Fits 7/8 inch diameter handlebars
Lever Assembly Brake, Polished
$20.99
1988-2002
Part number: 14-0107
- Replacement for Kawasaki, Suzuki, and Yamaha cable-type brake lever assembly on MX bikes
- Meets or exceeds OEM quality
- Polished finish
- Not for use with hydraulic brakes or clutches
- Perch adjuster is designed for an 8mm O.D. housing end fitting
- Lever is designed for an 8mm diameter x 10mm length barrel
- Exposed wire length when hooked up needs to be 40mm to 49mm
- Fits 7/8 inch diameter handlebars
Lever Assembly Brake, Black
$21.99
1988-2002
Part number: 14-0105
- Replacement for Kawasaki, Suzuki, and Yamaha cable-type brake lever assembly on MX bikes
- Meets or exceeds OEM quality
- Black finish
- Not for use with hydraulic brakes or clutches
- Perch adjuster is designed for an 8mm O.D. housing end fitting
- Lever is designed for an 8mm diameter x 10mm length barrel
- Exposed wire length when hooked up needs to be 40mm to 49mm
- Fits 7/8 inch diameter handlebars
Motion Pro Clutch/ Parking Brake Lever
$14.99
1988-2006
670530
Polished Aluminum
Motion Pro Front Brake Lever 88-02
$19.99
OEM replacement
Emgo Front Brake Lever
$14.95
Bare aluminum
Stock replacement for 2003 - 2006 Blaster
10" Yamaha Bar Pad
$14.95
Scratch resistant, screen printed design with Velcro closures on the cover with foam pad.
10" Bar Pad Metal Mulisha
$14.95
Features a scratch resistant screen printed design and Velcro closures on cover, with foam pad.
Renthal Full Diamond Soft Grey Grips
$16.95
Renthal ATV grips are available in a variety of patterns, styles and advanced rubber compounds to suit the individual needs of every rider.
All of the ATV grips feature a smaller inner flange to allow for clearance of the thumb throttle and closed ends.
Renthal Atv Grips Soft Diamond Waffle Light Grey
$16.95
Renthal ATV grips are available in a variety of patterns, styles and advanced rubber compounds to suit the individual needs of every rider.
All of the ATV grips feature a smaller inner flange to allow for clearance of the thumb throttle and closed ends.
Motion Pro TORS Eliminator Cable and Top for OEM VM 26 Carb
$22.75
Does not include 6x.8 tap
Motion Pro TORS Throttle Cable
$8.99
1988-2006
Black vinyl coil-wound housing
Meets or exceeds OEM quality
Inner nylon sleeve for longer life and smooth operation
Motion Pro Shorty Rear Brake Kit
$21.99
Parking brake delete
Motion Pro Throttle Cable
$14.99
Fits TORS delete, twist throttle
Motion Pro Clutch Cable
$14.99
Yamaha Blaster Front Brake Cable 1988-2002
$18.50
Two required
Yamaha Blaster Front Brake Cable, Top 1988-2002
$13.50
Fits 1988-2002
Billet Throttle Cover
$18.99
Parking brake delete
Fuel
Boyesen Super Stock Reeds
$24.99
- Fiber single-stage replacement reeds
- Enhance performance at all rpm
- Matched to OEM specifications
- Last longer and better value than other stock reeds on the market
Idle Screw for Mikuni Carb
$8.99
Replaces idle screw for TORS elimination
Motion Pro TORS Throttle Cable
$8.99
1988-2006
Black vinyl coil-wound housing
Meets or exceeds OEM quality
Inner nylon sleeve for longer life and smooth operation
V-Force 4
$169
The VForce4 is built upon the solid foundation that made the VForce3 reed valve system such a success for over fifteen years.
While the VForce3 has been continually refined over the years (including the latest VForce3R models), this is a complete redesign of the entire system. We jokingly say, "The only thing we didn't change is the bolt pattern." However this is actually quite true. All the components that go into making a VForce reed valve system have been significantly changed since the VForce3.
The reed cage design now incorporates an airfoil shape at the reed tip area to increase air velocity from the outer ports. We use an all-new reed petal resin system, carbon fiber and lay-up on our new pre-curved reed petals. The benefit of the pre-curved reed petal is better sealing at the tip area. The VForce4 also features longer reed stops to progressively slow petal tip velocity, for increased petal durability. The combined reed tip area has been increased by over 10% resulting in increased total airflow. Finally, we reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape.
The all-new VForce4R models incorporate a rubber overmodling on the reed surface to drastically increase reed petal life, while also creating a superior sealing surface.
The all-new VForce4Ri models include a custom intake manifold boot that offers a straighter shot to the intake that greatly enhances both airflow and performance. The VForce4Ri is currently only available for select minis.
Boyesen Rad Valve
$189
MAXIMUM POWER ACHIEVED THROUGH AIR INTAKE, ACCELERATION AND DISTRIBUTION.
The Boyesen Rad Valve features a sophisticated array of performance attributes designed to provide peak horsepower gains, durability, and model-specific performance for each make/model/year machine. What makes the Boyesen Rad Valve design superior to stock or other aftermarket intake tract reed valve systems? Each Boyesen RAD Valve is unique - tailor made to that model, year and displacement. With the new RC2 Rad Valve System, Boyesen engineers have created a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance. The next generation RC2 series Rad Valve results in an optimized air intake system that provides superior efficiency, peak horsepower gains, and acceleration for YOUR specific model machine. While other aftermarket valves might change flange sizes or bolt patterns, they're basically generic - and require you to irreversibly cut your intake boot to install it! But with the RAD Valve, there are no compromises in power, no modifications. The Result: A true, bolt-on Power Boost.
Boyesen Power Reeds
$34.95
Fits stock cage
All Balls Fuel Tap Repair Kit
$17.95
Motion Pro TORS Eliminator Cable and Top for OEM VM 26 Carb
$22.75
Does not include 6x.8 tap
Bronco Air Filter
$17.95
Uni Air Filter
$35.95
Bronco Carb Rebuild Kit For OEM VM-26
$20.95
Mikuni Jet Kit 26mm
$34
5 Main Jets
Jetting Guide
Stage 1: Stock pipe and silencer, oil pump delete, aftermarket filter, aftermarket reeds
Jets:230, 240, 250, 260, 270Stage 2: Stock pipe, aftermarket silencer, oil pump delete, aftermarket filter, aftermarket reeds
Jets:240, 250, 260, 270, 280Stage 3: Stock pipe, aftermarket silencer, oil pump delete, open air box, aftermarket reeds
Jets:250, 260, 270, 280, 290Stage 4: Aftermarket pipe and silencer, oil pump delete, open air box, aftermarket filter, aftermarket reeds
Jets:260, 270, 280, 290, 300Stage 5: Aftermarket pipe and silencer, oil pump delete, open air box, aftermarket filter, aftermarket reed cage
Jets:270, 280, 290, 300, 31032.5 Pilot Jet
Bowl Gasket
Four Screws
Jetting Guide
Includes:
Mikuni VM-26 Carb
$189
Comes with Motion Pro throttle cable, TORS delete, Idle screw, and jet kit
Jetting Guide
Stage 1: Stock pipe and silencer, oil pump delete, aftermarket filter, aftermarket reeds
Jets:230, 240, 250, 260, 270
Stage 2: Stock pipe, aftermarket silencer, oil pump delete, aftermarket filter, aftermarket reeds
Jets:240, 250, 260, 270, 280
Stage 3: Stock pipe, aftermarket silencer, oil pump delete, open air box, aftermarket reeds
Jets:250, 260, 270, 280, 290
Stage 4: Aftermarket pipe and silencer, oil pump delete, open air box, aftermarket filter, aftermarket reeds
Jets:260, 270, 280, 290, 300
Stage 5: Aftermarket pipe and silencer, oil pump delete, open air box, aftermarket filter, aftermarket reed cage
Jets:270, 280, 290, 300, 310
VM-26 Choke Knob
$21
Hardware
Parking Brake Block Off
$9.99
2003-2006
Billet aluminum cover complete with two stainless steel cap screws and O ring gasket
Body Works Fastener Kit
$22.99
Body Work Fastener kits are carefully researched and designed to include all the fasteners, shoulder bolts and aluminum bushings needed when replacing the fork guards, fenders, number plates, radiator shrouds and seats.
Exhaust Coupler 1.125" ID
$15.50
Oil Fill Cap
$12.99
Cable Hold Down
$12.99
Oil Pump Cover
$49
Flywheel Cover
$69
Clutch Actuator Spring Tab
$25
Fixes the broken tab for the clutch actuator recoil spring. Can be welded or bolted on
Block Off Kit
$14
Sprocket Holder with Bolts
$29
Center Case Dowels (Pair)
$18
Complete Engine Dowel Pin Kit
$30
Clutch Push Rod and Ball
$22
Clip and Washer Kit
$39
Master Engine Bolt Kit
$37
Center Case Bolt Kit
$20
Clutch Cover Bolt Kit
$13
Stator Cover Bolt Kit
$11
Oil Pump Cover Bolt Kit
$11
Flywheel Nut and Washer
$19
Clutch Cable Holder
$19
Kicker Spring Kit
$19
Cylinder Stud Kit
$22
Engines
Yamaha Blaster Engine
$1,050
$75 US lower 48 only
Rebuilt Blaster engine. New main and balance shaft bearings, Wiseco crankshaft, freshly bored aftermarket cylinder with Wossner forged piston, Wiseco / Wossner gaskets and seals. Perfect choice for the recreational rider that's on a budget. Does not include flywheel, stater, kicker, or shift shaft. Feel free to call the shop if you have further questions.
Aggressive Trail Ported Engine
$2,200
$75 US lower 48 only
Freshly built blaster engine. Aggressive trail porting, head mod for high octane pump fuel, lightened balance shaft, lightened flywheel, drilled primary, Tusk clutch kit, Wossner connecting rod, Wossner forged piston, OEM gaskets, new OEM main and transmission bearings, oil block off, shift star mod. The engine cases have no damage. Does not come with a stator, kicker, or shifter. Engine has been heat cycled.
Dress Up
Parking Brake Block Off
$9.99
2003-2006
Billet aluminum cover complete with two stainless steel cap screws and O ring gasket
Billet Chain Guide
$24.99
Aluminum Steering Stem Bushing
$19.99
Billet Throttle Cover
$18.99
Parking brake delete
Exhaust Coupler 1.125" ID
$15.50
Oil Fill Cap
$12.99
Cable Hold Down
$12.99
Oil Pump Cover
$49
Flywheel Cover
$69
Chain and Sprockets
JT Front Sprocket Steel
$12
12, 13, or 14 tooth options available
Jt Alloy 40 Tooth 520 Black Rear Sprocket
$27.20
JTR853.40 blk
Chain Rollers
$9.99
2 per kit
Billet Chain Guide
$24.99
JT 520X1R3 X Ring Chain 98 links
$54.97
EK "X" Ring Gold Chain 520X 96 links
$82
For stock length swing arms
Oils
Ratio Rite
$6.50
Get a perfect mix every time with the Ratio Rite mixing cup
Fill the polypropylene container to the pre-calibrated ratio mark and pour into gas in mixtures ranging from 16:1 to 44:1 for 1, 1-1/2, 2, & 2-1/2 gallons
Calibrations include ounces and cc's, with pints on the opposing side
24 oz. total capacity
Motion Pro Cable Lube
$17.99
Uni Foam Filter Oil
$12.95
16 oz
Maxima Water Proof Grease
$14.99
16 oz Jar
Maxima Super M Two Stroke Oil 16 oz
$12.49
Brakes
Front Brake Shoes
$8.99
Part number: 121433
1988-2002
One set per wheel
Wild Boar brake pads and shoes are asbestos free.
Semi-metallic made from a mixture of kevlar and carbon fiber suitable for general use or utility use.
All pads and shoes are sold per pair, per wheel.
Parking Brake Block Off
$9.99
2003-2006
Billet aluminum cover complete with two stainless steel cap screws and O ring gasket
Vesrah Semi Metalic Rear Brake Pads
$28.95
1988-2002
Wild Boar Rear Brake Pad Semi Metalic
$9.95
WB84X
2003-2006
Wild Boar Front Brake Pads Semi Metalic
$9.95
WB54X
one set for one wheel
Wild Boar Full Metal Rear Brake Pads
$18.95
WB84R
2003-2006
Wild Boar Full Metal Front Brake Pads
$18.95
WB54R
2003-2006
one set for one wheel
EBC Rear Brake Pads
$33.99
FA84X
2003-2006
EBC Front Brake Pads
$33.99
FA54X
2003-2006
one set for one wheel
Wild Boar full Metal Rear Brake Pads
$20.95
121905
1988-2002
Wild Boar Rear Brake Pads Semi Metalic
$14.95
AT-05455
1988 - 2002
Pro-x Front Master Cylinder Rebuild Kit
$25.99
2003-2006
860 230 5003
© 1983-Present by Ken OConnor Racing. All rights reserved.