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The OSP Yamaha Viper Performance Muffler is made from high quality Stainless Steel. Designed to bolt right on to your stock header! Our muffler uses the stock rubber mount from your stock muffler. Muffler is louder than stock and has a nice throaty sound to it. Tube Size 2.25" All Stainless...

NEW FOR THE 2015 SEASON- Dark Energy Adjustable Clutch Weights. Yamaha SR Viper Clutch Weight Kit. One Stop Performance clutch weight kit improves acceleration & performance.They are custom adjustable to suit different power ranges. For the average trail rider with stock power & modified...

Check out the popular Viper Belt Adjuster on my website ospracingparts.com. They are on sale for $89.99. Stocked, Packaged and ready to ship.

OSP SR Viper turbo kits are ready and for sale, there are 3 parts to the install video, and here is the First one. our kits are easy and fast install, you could do it in 1 evening, we will have 3 kits, basic kit 190 kit with 3 injectors, our 230 kit with 6 injectors, and our 270 to over 450hp...

12-13 psi makes 140 on the track dyno. this is our stage 3 kit, this was the last to be tested and now we will have them for sale, we have also made our own TURBO adjustable fly weights that work for 6 psi to 15 psi I will be working on getting these new product on our web store keep...

we have been very busy we have our 6 PSI turbo kit ready for sale and have our NEW 280 plus kit just about done, and came up to a another issue to address, seems like no one has ran into this yet but if you just plug where the stock internal regulator is you will loose the cleaver way Yamaha was...

this allows you to make belt deflection adjustment and with out removing the clutch you can use SRVIPER at check out and get a TY discount.. thanks

we got the part for you new osp fuel regulator fitting..

Yamaha SR Viper one thing about yamaha secondary is you have to take or add washer to the 3 bolt on back of secondary clutch to make belt adjustments, WELL osp has better Idea, you can use this and make adjustments with out removing in the clutch and get p...erfect belt drop every time.. ON top...

OSP Viper trail turbo kit our kit fits nice under the hood, INTER-COOLED pulls in cold air with out having the air filter on the outside , perfect for trail riding conditions and you know with OSP you will have the power you want.. keep watching we are dynoing now... tps:

http://www.ospracingparts.com/yamaha-viper-muffler/

we are building some limited amount of turbo kits and looking for someone in Michigan that is considering a turbo kit contact me 517 548 2325 or 517 861-2325... I got a deal for someone.. Jim

OSP VIPER OUTLAW VIDEO we have had a rough go at it with our drive train issues, this season, but it all started coming to together at Hastings. Our sled was ROCKING.. these are test passes and I never wicked her up... cant wait for that this winter... we will be at the NOVI show ...

osp viper outlaw final build pictures viper outlaw frame build

Tthis is our built Apex motor we do all fabricating in house, this turbo kit using a 3071 base turbo, water to air inter cooler, in the video we are running 20 psi, we have since the turn it up to 25 psi I will put some of those videos up soon.. but this is the baddest thing ever... this...

OSP spark plug gap tool, get the perfect gap fast and easy.. OSP Racing parts STORE

Great job Glenn and crew... I m really get the bug now... can wait..

we are busy getting ready for the biggest race of the year. here is a peek at our all new chassis