4 Stroke Pipe

$502.99 Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe and Mid-Pipe 4QH01250
Manufacturer: Pro Circuit
Dennis Kirk Part #: 447696
Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe and Mid-Pipe: Manufacturer part # 4QH01250 - Designed to boost output throughout the powerband. Fine-tune your power delivery by changing end caps ((See T-4 Replacement End Caps under Exhaust Replacement Parts and Accessories). Lighter than stock. Extruded 6063 aluminum silencer resists oxidation and features long-lasting packing material. Quick access to the U.S.F.S. approved screen spark arrester through removable end cap tip. This system includes head pipe and connector piipe.. 4QH01250
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4 Stroke Pipe

$612.99 Pro Circuit T-4 4-Stroke Dual Mufflers w/Mid-Pipe 18210424
Manufacturer: Pro Circuit
Dennis Kirk Part #: 432656
Pro Circuit T-4 4-Stroke Dual Mufflers w/Mid-Pipe: Manufacturer part # 18210424 - Improved power delivery and exhaust note. Body is made from lightweight 6061 T-6 brushed aluminum and the end cap and intake tube are stainless steel. Tunable end caps allow fine-tuning of power delivery for different types of riding and terrain. Silencers include wire-meshed spark arrester that can be removed for closed-course racing. Steel Allen head screws make repacking an easy task. Exclusive E-glass pillow packing. NOTE: Dual silencer with mid-section.. 18210424
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4 Stroke Pipe

$231.99 Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe and Mid-Pipe 4QY02080
Manufacturer: Pro Circuit
Dennis Kirk Part #: 448114
Pro Circuit T-4 4-Stroke Exhaust System w/Headpipe and Mid-Pipe: Manufacturer part # 4QY02080 - Designed to boost output throughout the powerband. Fine-tune your power delivery by changing end caps (See t-$ Replacement End Caps under Exhaust Replacement Parts and Accessories). Lighter than stock. Extruded 6063 aluminum silencer resists oxidation and features long-lasting packing material. Quick access to the U.S. Forest Service approved screen spark arrestor through removable end cap tip. 304 stainless steel headpipe, S-bend, inlet cap. one-piece exhaust flange, stand off and springs give a great look, performance and durability. This system includes head pipe and connecting pipe.. 4QY02080
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4 Stroke Pipe

$327.99 Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe 4QY86350
Manufacturer: Pro Circuit
Dennis Kirk Part #: 446479
Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe: Manufacturer part # 4QY86350 - Designed to boost output throughout the powerband. Fine-tune your power delivery by changing end caps(See T-4 Replacement End Caps under Exhaust Replacement Parts and Accessories). Lighter than stock. Extruded 6063 aluminum silencer resists oxidation and features long-lasting packing material. Quick access to the U.S. Forest Service approved screen spark arrester through removable end cap tip. Can be used with OEM or Pro Circuit head pipe (sold separately). This silencer comes with a 1.75 in. diameter end cap. Connector pipe included.. 4QY86350
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4 Stroke Pipe

$664.99 Pro Circuit T-4 4-Stroke Dual Mufflers w/Mid-Pipe 4H072502
Manufacturer: Pro Circuit
Dennis Kirk Part #: 433664
Pro Circuit T-4 4-Stroke Dual Mufflers w/Mid-Pipe: Manufacturer part # 4H072502 - Improved power delivery and exhaust note. Body is made from lightweight 6061 T-6 brushed aluminum and the end cap and intake tube are stainless steel. Tunable end caps allow fine-tuning of power delivery for different types of riding and terrain. Silencers include wire-meshed spark arrester that can be removed for closed-course racing. Steel Allen head screws make repacking an easy task. Exclusive E-glass pillow packing. NOTE: Dual system w/mid-section. 4H072502
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4 Stroke Pipe

$25.95 Moose 17 in. Silencer Repack Cartridge for Aftermarket Dirt Bike 4-Stroke Exhaust 14091
Manufacturer: Moose
Dennis Kirk Part #: 432650
Moose 17 in. Silencer Repack Cartridge for Aftermarket Dirt Bike 4-Stroke Exhaust: Manufacturer part # 14091 - The latest in muffler packing technology. Offer consistent packing density. Cut installation time in half. 25% lighter than stock packing. Last 5-10 times longer than glass packing. Outer casing made from high-temperature fabric that remains intact for removal of used part. Fits 17 in: Big Gun: Race/Quiet/Utility; Bills Pipes: Oval; FMF: Ti4 (Original round); White Brothers: R4. NOTE: Part numbers are for unmodified aftermarket exhausts. If the muffler has been modified from the original length and falls between lengths available on the chart, order the next longest cartridge available for your muffler.. 14091
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4 Stroke Pipe

$27.99 PJ1 Silverfire Extra Premium 4-Stroke Motor 9501GPET
Manufacturer: PJ1
Dennis Kirk Part #: 303178
PJ1 Silverfire Extra Premium 4-Stroke Motor : Manufacturer part # 9501GPET - This is a JASO-approved, petro formula, high-performance, multi-viscosity racing oil. Specifically formulated for motorcycles so it runs cooler to extend engine life while smoother shifting extends tranny and clutch life. Meets API SG requirements. Sold each.. 9501GPET
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4 Stroke Pipe

$7.75 PJ1 Silverfire Extra Premium 4-Stroke Motor 950PET
Manufacturer: PJ1
Dennis Kirk Part #: 303177
PJ1 Silverfire Extra Premium 4-Stroke Motor: Manufacturer part # 950PET - This is a JASO-approved, petro formula, high-performance, multi-viscosity racing oil. Specifically formulated for motorcycles so it runs cooler to extend engine life while smoother shifting extends tranny and clutch life. 32 oz. or 1 gallon bottles. Sold each.. 950PET
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4 Stroke Pipe

$33.99 Bel Ray Thumper 4-Stroke Semi-Synthetic Racing Oil 90260
Manufacturer: Bel Ray
Dennis Kirk Part #: 303950
Bel Ray Thumper 4-Stroke Semi-Synthetic Racing Oil: Manufacturer part # 90260 - High VI-base 20W-50 oil delivers optimum protection for high-revving 4-stroke MX bikes. Antiwear additives provide unmatched protection to gearbox and valve train, which are subjected to frequent shock loads and boundary lubrication. Maintains superior film strength in the most demanding riding conditions and flows freely in cold temperatures. Special antioxidants help provide stable oil temperatures to reduce oil sludge and maintain maximum cooling efficiency.. 90260
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4 Stroke Pipe

$9.99 PJ1 Goldfire Ultra Synthetic Blend 4-Stroke Motor 932
Manufacturer: PJ1
Dennis Kirk Part #: 30293
PJ1 Goldfire Ultra Synthetic Blend 4-Stroke Motor : Manufacturer part # 932 - Promotes cooler running and smoother shifting for reduced engine wear. Extends clutch and transmission life. API services SH/CE. Liter bottles.. 932
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4 Stroke Pipe

$12.50 Klotz 4 Stroke Synthetic Engine Oil KL850
Manufacturer: Klotz
Dennis Kirk Part #: 30184
Klotz 4 Stroke Synthetic Engine Oil: Manufacturer part # KL850 - Improved throttle response and gas mileage. Inhibits rust, cuts exhaust smoke and sludge formation. Compatible with regular oil. API services SG-CD. Quart bottles.. KL850
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4 Stroke Pipe

$12.50 Klotz 4 Stroke Synthetic Engine Oil KL840
Manufacturer: Klotz
Dennis Kirk Part #: 30198
Klotz 4 Stroke Synthetic Engine Oil: Manufacturer part # KL840 - Improved throttle response and gas mileage. Inhibits rust, cuts exhaust smoke and sludge formation. Compatible with regular oil. API services SG-CD. Quart bottles.. KL840
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4 Stroke Pipe

4 Stroke Pipe