Polaris 2008-2022 Sportsman 850 Engine (All Models) We guarantee your engine will be as good as new. We stand behind our engines with a 1-yr. warranty. Rev6 also offers a 2 year, no-fault, no-questions-asked warranty for an additional $450. This means that for two years, we will replace your engine free of charge, no questions asked, if anything happens! We got you covered! At Rev6, we are committed to excellence in quality control. Every part, engine, and transmission goes through a rigorous quality assurance process. Experience the confidence that comes from our dedication to superior craftsmanship and reliability that Rev6 offers!

Summary

Rev6 provides rigorously remanufactured Polaris Sportsman 850 engines for 2008–2022 models, backed by a standard no-fault 1-year warranty and an optional 2-year no-fault upgrade for $450. Each engine is fully disassembled, inspected, machined, and rebuilt with new components as needed, then double-checked by master technicians for quality. A refundable $1,200 core charge applies unless you send in an acceptable core, and typical lead time is 5–10 days. Performance upgrade options and expert sales support are available.

Your Rev6 engine includes the following features:

• Standard No-Fault 1-year warranty with an optional 2-year No-Fault Warranty upgrade.
• We restore and reuse as many OEM parts as possible. We inspect and refurbish all OEM parts to guarantee high quality internals that keep your machine running reliably.
• All components are cleaned, dismantled, inspected and repaired as needed.
• Cylinder head inspected, cleaned, sandblasted, decked, rebuilt to manufacturer spec and undergoes a quality inspection.
• Valve guides are inspected and replaced as needed.
• Valves and valve seats are recut/refaced to ensure tight seal, verified with vacuum test.
• Camshafts lobes and journals cleaned and polished, replaced as needed.
• Crankshaft is inspected and verified within OEM specs.
• Crankshaft main bearings and rod bearings are replaced with new high-babbitt coated bearings.
• The engine block cylinders are inspected for wear and damage. Worn cylinders are bored to the next oversize and honed to spec. We resleeve cylinders as necessary.
• Pistons replaced with new moly coated pistons and rings.
• Timing chain inspected for stretch and wear, replaced as needed.
• Refurbished oil pump assembly.
• Fully inspected and machined engine cases, tested for journal wear, cracks, holes, or excessive wear.
• All gaskets and seals replaced.
• Engine assembled and torqued to manufacturer specifications.

Our engines undergo a thorough multiple inspections by master technicians and pass a stringent quality control process. We have over 60+ years of combined experience in the power sports industry.

Double inspection guarantee; your engine will be assembled by one master technician and inspected by another master technician to ensure your engine is better than new

Core Options: To receive the Rev6 engine, you will need to provide your old core or pay a refundable core charge of $1200.00. If your core is in good condition, the charge is fully refundable! If you have a good core to return, please give us a call. We also offer alternatives if you would like to avoid paying the refundable core charge and would like the new engine first, but this only applies to customers with a qualifying core for exchange.

Looking for more performance? Let’s help put more power to the wheels! Give us a call, and we can design a vehicle that offers more power and fun! Whether you want to maintain reliability while gaining extra power or prefer something more aggressive, We got you. Contact us, and we’ll set you up with something exceptional!

Lead Time: Engines typically ship within 5 to 10 days of order. For more accurate lead times, please give us a call.

Have more questions? Rev6 has a very experienced sales team that can help guide you in the right direction!

Q&A

Question: What warranty comes with the Rev6 Polaris Sportsman 850 engine, and can I upgrade it? Short answer: Every Rev6 engine includes a standard No-Fault 1-year warranty. You can upgrade to a 2-year No-Fault, no-questions-asked warranty for an additional $450—if anything happens within two years, Rev6 will replace your engine free of charge.

Question: What exactly is done to the engine during the Rev6 build? Short answer: Rev6 fully disassembles, cleans, inspects, and repairs the engine, reusing OEM parts where possible after refurbishment. Key operations include: cylinder head cleaning, decking, and rebuild to spec; valve guides replaced as needed; valves/seats recut and vacuum-tested; camshafts cleaned/polished and replaced as needed; crankshaft verified within OEM specs; new high-babbitt main and rod bearings; cylinders inspected, bored/honed or resleeved as required; new moly-coated pistons and rings; timing chain inspected/replaced as needed; refurbished oil pump; engine cases inspected/machined and checked for wear or damage; all gaskets and seals replaced; final assembly torqued to manufacturer specifications.

Question: How does the core charge work if I want a Rev6 engine? Short answer: You can send in your old core or pay a $1,200 refundable core charge. If your returned core is in good condition, the charge is fully refunded. Rev6 also offers options to ship your new engine first if you have a qualifying core for exchange—contact their team to confirm eligibility. If you already have a good core to return, give them a call for next steps.

Question: What quality control and inspections do Rev6 engines go through? Short answer: Each engine undergoes multiple inspections and a stringent quality control process. Rev6 applies a double inspection guarantee—one master technician assembles the engine, and another master technician performs a final inspection—leveraging over 60 years of combined power sports experience to ensure reliability and craftsmanship.

Question: How long does it take to receive my engine after ordering? Short answer: Typical lead time is 5 to 10 days from the order date. For the most accurate, up-to-date lead time, contact the Rev6 sales team.

Q&A

Question: Which Polaris Sportsman 850 models does this engine fit? Short answer: It’s built for all Polaris Sportsman 850 models from 2008 through 2022. The offering covers every model variant in those years.

Question: What does “remanufactured” mean for a Rev6 engine? Short answer: Rev6 fully disassembles, cleans, inspects, machines, and rebuilds the engine to spec. Highlights include: cylinder head cleaning/decking/rebuild; valve guides replaced as needed; valves and seats recut and vacuum-tested; camshafts cleaned/polished or replaced as needed; crank verified within OEM specs; new high-babbitt main and rod bearings; cylinders inspected and bored/honed or resleeved; new moly-coated pistons and rings; timing chain inspected/replaced as needed; refurbished oil pump; cases inspected/machined; all gaskets and seals replaced; final assembly torqued to manufacturer specifications.

Question: What warranty is included, and can I upgrade it? Short answer: A standard 1-year No-Fault warranty is included. You can upgrade to a 2-year No-Fault, no-questions-asked warranty for $450—if anything happens within two years, Rev6 will replace your engine free of charge.

Question: How does the $1,200 core charge work? Short answer: You can send in your old core or pay a $1,200 refundable core charge. If your returned core is in acceptable condition, the charge is fully refunded. Rev6 can also ship your engine first if you have a qualifying core for exchange—contact the team to confirm eligibility and next steps.

Question: How does Rev6 ensure quality, and how long until my engine ships? Short answer: Every engine passes multiple inspections and a stringent quality control process. Rev6’s double-inspection guarantee means one master technician assembles the engine and another performs a final inspection. Typical lead time is 5–10 days from order; call the sales team for the most accurate timeline and any performance upgrade options.