ATV
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Sportsman 400 450 Top End Rebuild: Piston, Rings, Top End Gaskets
Rebuild your top end with this complete kit. The kit is centered around a new Namura piston kit. These pistons are top quality and include all the features of the more expensive pistons like teflon coated skirts, anodized domes, and machine finished heads. This kit includes a STANDARD 87.89 MM piston kit with rings, pin and circlip. The top end gasket kit includes head, base, side cover and exhaust gasket to rebuild the top end of your Polaris 400. Even includes the valve seals! Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Includes all of the following parts shown in the photo including:
- Std. Piston Kit
- Head Gasket
- Base Gasket
- Valve Cover Gasket
- Exhaust Gasket
- Cam Cover Gasket
- Water Outlet Gasket
- Valve Seals (4)
- Camshaft Adapter O-ring
This top end repair kit fits the following models:
2001-05 Sportsman 400
2008-14 Sportsman 400
2004-05 Ranger 400
2010-14 Ranger 400
2011-14 Hawkeye 400
2006-07 Sportsman 450
$129.95$116.96 -
Sportsman 400 Top End Gasket Set
Kit includes head, base, side cover and exhaust gasket to rebuild the top end of your Polaris 400/425/450 four stroke motor. Even includes the valve seals! Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Includes all of the following top end gaskets shown in the photo including:
- Head Gasket
- Base Gasket
- Valve Cover Gasket
- Exhaust Gasket
- Cam Cover Gasket
- Water Outlet Gasket
- Valve Seals (4)
- Camshaft Adapter O-ring
This gasket kit fits the following models:
2001-05 Sportsman 400
$49.95$44.96Sportsman 400 Top End Gasket Set
$49.95$44.96 -
Trailblazer 330 STD. (78.45mm) Piston & Top End Gasket Set
This top end rebuild kit includes a brand new STANDARD SIZE Namura piston with rings and piston pin. If your cylinder is in good condition and just needs a quick hone then this standard size piston should work for you. You will also receive a top end gasket kit to rebuild the top end of your Polaris 330 four stroke motor. Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Namura pistons are direct OEM replacements with a few key advantages. First is the Teflon/Molybdenum coating on the skirts to increase heat transfer, reduce friction and reduces scuffing and seizures. Machined smooth heads and anodized domes increase durability and can even add horsepower and fuel economy. Lastly, the Hypereutectic casting process provides a higher silicon content for reduced expansion rates and additional wear resistance. Namura pistons are simply the best value on the market. All the advantages of a top of the line piston at a great price! Include a new STD piston kit and all of the following top end gaskets shown in the photo including: Head Gasket Base Gasket Valve Cover O-Ring Exhaust Gasket Breather Cover Gasket Valve Seals Tensioner Gasket This piston and gasket kit.
Fits the following models:
2004-05 ATP 330
2003-06 Magnum 330
2003-13 Trail Boss 330
2008-13 Trail Blazer 330
We make every attempt to ensure every items fitment is accurate. We do the testing on each item before its listed for sale to ensure fitment and quality. Items may fit multiple years and models listed.
$119.95$107.96Trailblazer 330 STD. (78.45mm) Piston & Top End Gasket Set
$119.95$107.96 -
Trailblazer 400 Top End Gasket Set
Kit includes head gasket, base gasket, reed valve gasket and exhaust gasket to rebuild the top end of your Polaris ATV 400 two stroke. Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Includes all of the following top end gaskets shown in the photo including:
- Head Gasket (Replaces Polaris # 3084731)
- Base Gasket (Replaces Polaris # 3084729)
- Reed Valve Gasket (Replaces Polaris # 3084148)
- Exhaust Gasket (Replaces Polaris #3084439, 3086757)
This gasket kit fits the following models:
1994-95 400L
1994-97 400L Big Boss
1995-02 Scrambler 400
1994-99 Sport 400
1994-97 Sportsman 400L
1996-97 Xpress 400
1995-02 Xplorer 400
2003 Trail Blazer 400
$24.95$22.46Trailblazer 400 Top End Gasket Set
$24.95$22.46 -
Trailblazer/Trailboss 250 Top End Gasket Kit
Kit includes head, base, and exhaust gasket to rebuild the top end of your Polaris 250. Don’t ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Includes all of the following top end gaskets shown in the photo including:
Head Gasket
Base Gasket
Exhaust GasketThis gasket kit fits the following models:
1990-2006 Trailblazer 250
1989-92 Trailboss 250
1989-92 Big Boss 250
2000-02 Xplorer 250
$24.95$22.46Trailblazer/Trailboss 250 Top End Gasket Kit
$24.95$22.46