4 Stroke


4-Stroke Leak Down Tester - Motion Pro

4-Stroke Leak Down Tester - Motion Pro


Description: Designed to check percentage of cylinder leakage in 4-stroke engines Air source of 70 to 160 psi required to pressurize cylinder; gauge registers total leakage past rings, head gasket, intake and exhaust valves Listen to carburetors, exhaust system, etc. to find the problem Kit includes 10mm, 12mm and 14mm spark plug adapters, regulator and gauge
Price: $154.95.


5/8 Water-cooled 4-Stroke Spark Plug Tool - Motion Pro

5/8 Water-cooled 4-Stroke Spark Plug Tool - Motion Pro


Description: Motion Pro 5/8 Water-cooled 4-Stroke Spark Plug Tool Special thin wall design for water-cooled 4-strokes with 5/8" plugs Fits 16mm or 5/8" hex and works great on models like the CRF450, DR-Z400, KLX300 and YZ250-426F The socket is designed to fit into the spark plug cavity Can be used with a 3/8" ratchet, 13/16" wrench removal and installation
Price: $22.95.


Thumper 4-Stroke Semi-Synthetic Racing Oil - Bel-Ray

Thumper 4-Stroke Semi-Synthetic Racing Oil - Bel-Ray


Description: Bel-Ray Thumper 4-Stroke Racing Motor Oil is specifically engineered to meet the demands of single cylinder, multi-valve 4-stroke racing engines. The high temperatures and severe loads of racing require the exceptional film strength, shear- and temperature stability of Bel-Ray Thumper 4-Stroke Racing Motor Oil. Sizes: 1 Liter and 4 Liter Bottles Grades: 10W-40 and 20W-50
Price: $39.99.


Goldfire 4-Stroke Synthetic Blend Motor Oil - PJ1

Goldfire 4-Stroke Synthetic Blend Motor Oil - PJ1


Description: PJ1 Goldfire 4-Stroke Synthetic Blend Motor Oil formulated for high RPM air/water cooled engines Smoother shifting Reduces deposits and engine wear
Price: $8.99.


Racing Series 4-Stroke Silencer - SuperTrapp

Racing Series 4-Stroke Silencer - SuperTrapp


Description: The Racing Series 4-Stroke Silencer from Super Trapp features lightweight aluminum construction Repackable baffle Utilizes stock headpipe U.S. Forest Service-approved spark arrestor **Note: Using the opened-end cap eliminates the spark arrestor capability and increases noise. Use only for closed-course competition where permitted Click Here for Additional Exhaust Information
Price: $224.99.


Silverfire 4-Stroke Premium Petroleum Motor Oil - PJ1

Silverfire 4-Stroke Premium Petroleum Motor Oil - PJ1


Description: PJ1 new petroleum based formulation Meets or exceeds JASO requirements Reduces internal engine wear
Price: $6.99.


Four-Stroke Premier Multi-Layer Silencer Packing - FMF

Four-Stroke Premier Multi-Layer Silencer Packing - FMF


Description: Developed for high-output 4 strokes 4-layer design; stainless steel wool, stainless screen, high-density woven temperature barrier and then FMF's exclusive packing material Long lasting and resistant to blowing out
Price: $34.99.


Four-Stroke Core Kit - SuperTrapp

Four-Stroke Core Kit - SuperTrapp


Description: Supertrapp's 4-Stroke Core Kit includes: 12 stainless steel diffuser discs 1 3/4" diameter core End cap High-temp ceramic wool packing Stainless steel center bolt Body sold separately
Price: $73.99.


Starcross Sand 4 Rear Tire - Michelin

Starcross Sand 4 Rear Tire - Michelin


Description: Michelin Starcross Sand 4 Rear Tire Rubber mixture is designed to perform well even in cooler temperatures Designed for low infl ation pressures-can be used as low as 12 psi Specific knob pattern for 125 2-stroke and 250 4-stroke increases float to avoid power loss For use with S12 or MS3 front tires
Price: $86.99.


4 Road Exhaust - Leo Vince

4 Road Exhaust - Leo Vince


Description: The 4 Road Scooter Exhaust from Leo Vince features: Specifically developed for 4-stroke engines, boosts torque and power Header pipes are TIG-welded AISI 304 stainless steel Stainless steel muffler sleeve Muffler interior has been designed to enhance performance E-approved, meets European standard noise levels for road use Click Here for Additional Exhaust Information
Price: $498.95.


TC-4 Seat Cover - Factory Effex

TC-4 Seat Cover - Factory Effex


Description: Introducing the 'TC-4' The first specifically designed seat cover kit for today's 4-strokes After months of R&D, FX has designed a seat cover kit with never before used seat technology The TC-4 comes with all new Dura-Grip material that has integrated embossed top Seat ribs that keep you positioned on the seat where you need to be The TC-4 features original color matched rear panel, raised OEM logos and interlock stitching for long lasting wear Also included is the all new 'The Bump' that gives you even more grip and control with hassle free installation. ('The Bump' also sold separately)
Price: $71.99.


PowerBomb Titanium Header with Mid-Pipe - Factory 4 Silencer Only - FMF

PowerBomb Titanium Header with Mid-Pipe - Factory 4 Silencer Only - FMF


Description: The redesigned PowerBomb is a four-stroke header that incorporates FMF's patented PowerBomb module at a precise location in the initial stage of the header. by positioning this "Bomb" at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Additionally, the PowerBomb is a "pre-muffler" of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases). **Note Must be used with FMF's Factory 4 Silencer Click Here for Additional Exhaust Information
Price: $566.99.


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