{"product_id":"ski-doo-19t-top-chaincase-gear-13-wide-15-spline-tp-351519-002","title":"Ski-Doo 19T Top Chaincase Gear (13-Wide \/ 15-Spline) \/\/ SKU: TP-351519-002","description":"\u003cdiv class=\"bmp-product-description\"\u003e\n  \u003cp\u003e\u003cb\u003eSKU:\u003c\/b\u003e TP-351519-002\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eManufacturer:\u003c\/b\u003e TEAM Industries \/ Venom Products\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e 19 Tooth (19T) Outer Sprocket | 13-Wide (13W) Chain Pitch | 15-Tooth Internal Spline\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003ePrimary Application:\u003c\/b\u003e Ski-Doo REV Gen4 \u0026amp; Gen5 850 E-TEC mountain snowmobiles (Summit and Freeride models).\u003c\/p\u003e\n\n  \u003cp\u003eSharpen throttle response and eliminate parasitic clutch drag in thin mountain air with the \u003cb\u003eSki-Doo 19T Top Chaincase Gear\u003c\/b\u003e. By dropping \u003cb\u003eone tooth down from factory OEM mountain gearing\u003c\/b\u003e, this precision upper drive sprocket changes your mechanical advantage right at the chaincase, significantly taking load off the drivetrain and drive belt under heavy deep-snow resistance.\u003c\/p\u003e\n\n  \u003cp\u003eAt elevations above 6,000 feet, atmospheric horsepower loss combined with deep-lug mountain tracks puts massive strain on the clutches, causing excess belt heat and sluggish off-idle response. Dropping one tooth on the top sprocket acts as an instant torque multiplier. It relieves strain on your drive sheaves, drops belt operating temperatures, and delivers lightning-fast, crisp throttle snap the instant you squeeze the throttle in steep technical chutes.\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003e1-Tooth Down Ratio Drop:\u003c\/b\u003e Sits one tooth smaller than stock factory gearing to reduce drivetrain load and multiply track-shaft torque.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eCrisp Mountain Throttle Response:\u003c\/b\u003e Relieves resistance on the primary and secondary clutches, delivering instant track spin and snappier throttle pickup at high elevations.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eDrastic Belt Heat Reduction:\u003c\/b\u003e Taking load off the clutches prevents belt slippage, heat-soak, and premature belt failure on sustained powder pulls.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePrecision Case-Hardened Steel:\u003c\/b\u003e CNC-machined by TEAM Industries from high-tensile alloy steel to withstand aggressive torque spikes and severe shock-loading.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eExact 15-Spline Drop-In Fit:\u003c\/b\u003e Slides directly onto OEM Ski-Doo jackshafts with zero modifications and meshes perfectly with standard 13-wide silent drive chains.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eEssential Kit Component:\u003c\/b\u003e This is the exact 19T gear included in our \u003cb\u003eSki-Doo 850 E-TEC Long Track High Elevation Clutch Kit\u003c\/b\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eFitment \u0026amp; Installation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003eCompatible Models:\u003c\/b\u003e Fits Ski-Doo REV Gen4 and Gen5 850 E-TEC \/ 850 Turbo mountain models (Summit, Freeride) equipped with 13-wide chains and 15-spline jackshafts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eChain Tensioner Verification:\u003c\/b\u003e In almost all factory 850 mountain applications, the stock chain length accommodates this 1-tooth drop using the OEM chaincase mechanical tensioner. Always verify chain tension and inspect guide alignment prior to sealing the case.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eMaintenance Tip:\u003c\/b\u003e Replace chaincase seals if worn and refill with fresh full-synthetic chaincase fluid upon installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Bikeman Performance","offers":[{"title":"Default Title","offer_id":49937885987109,"sku":"TP-351519-002","price":65.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6436\/9701\/files\/TP-351519-002.webp?v=1794330975","url":"https:\/\/www.bikemanperformance.com\/products\/ski-doo-19t-top-chaincase-gear-13-wide-15-spline-tp-351519-002","provider":"Bikeman Performance","version":"1.0","type":"link"}