Sportsman XP Scrambler 850 Oil Pump Complete Rebuild Kit Top Bottom End Assembly

Polaris Sportsman Scrambler 850 Complete Engine Rebuild Kit – Full Top & Bottom End Assembly

Premium OEM + Performance Component Rebuild Package

This complete engine rebuild kit for all Polaris Sportsman & Scrambler 850 models includes every internal component required to restore your engine from the crankshaft up. Featuring Wossner forged pistons, a Hotrods crankshaft assembly, full gasket and seal coverage, valve components, timing components, ignition upgrades, and an OEM oil pump, this is the most complete 850 rebuild solution available.

🔥 Key Features & Benefits

A fully comprehensive kit engineered for maximum longevity, reliability, and high-performance operation.

• Wossner stock bore forged pistons – German-forged, moly-coated for reduced friction
• Nitrite-coated piston rings – high wear resistance and strong sealing
• Chrome wristpins and circlips – premium strength components
• Hotrods crankshaft assembly – brand new with rods pre-installed
• Rod bushings and crank bushings – full lower-end refresh
• Crank balancer bearings – smooth & balanced operation
• OEM oil pump – brand new factory pump included
• K&N performance oil filter – high-flow filtration
• Maxlock head stud kit – Lifetime Replacement Warranty*
• Complete engine gasket kit – all gaskets needed for full rebuild
• MLS head gasket – multi-layer steel for maximum sealing
• Full oil seal kit – crank seals, output seals, and all major seals
• Valve stem seals – restores proper valve sealing
• Water pump mechanical seal – OEM-grade replacement
• Water pump impeller, shaft, and bearing – complete new assembly
• Timing chain – brand new, ensures accurate valve timing
• NGK Iridium spark plugs – high-performance ignition upgrade
• All parts are brand new aftermarket or OEM where specified
• 1-year warranty on included components*

✅ Compatibility

This premium rebuild kit fits every Polaris 850 platform without modification.

• Polaris Sportsman 850 – all years
• Polaris Scrambler 850 – all years
• Direct bolt-on installation
• No machining required for installation
• Pistons compatible with pump or race gasoline

❓ Frequently Asked Questions (FAQ)

• Q: Does this kit include every part needed for a full rebuild?

  A: Yes, this kit includes all top end, bottom end, oiling system, timing, sealing, and valve components for a complete engine overhaul.

• Q: Is the oil pump truly OEM?

  A: Yes, the kit includes a brand new, genuine factory OEM oil pump.

• Q: Are the pistons forged?

  A: Yes, Wossner pistons are German-forged and moly-coated for premium performance.

• Q: Is any machining required?

  A: No machining is required. All components are direct OEM-fit replacements.

🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. Every rebuild kit is assembled with precision-selected, high-quality components designed for peak reliability and long engine life. Trust BPRATV to keep your Polaris Sportsman or Scrambler 850 running at its best, every single time.

Rebuild your Polaris 850 with confidence — order your complete kit today!

BPRATV - The Best Parts. The Best Performance. The Best Price.

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© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.*

Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code §§ 27156 and 38391]. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA-certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law.