Description
Built for Tight Trails. Rebuilt for the Next Adventure.
The Polaris RZR Trail S 1000 is designed for riders who need a compact side-by-side without sacrificing power. If your engine has developed low compression, excessive oil consumption, or internal damage, REV6 can rebuild your original engine and return it ready for installation.
This is a Build Core Engine service for 2021-2026 Polaris RZR Trail S 1000 EPS, Premium, and Ultimate models. Once your order is placed, we’ll email your work order together with shipping instructions and engine preparation details. After your engine arrives, our technicians inspect the core before beginning the rebuilding process.
Service Overview
- Fitment: Polaris RZR Trail S 1000 EPS, Premium & Ultimate (2021-2026)
- Service Type: Build Core Engine Rebuild
- Warranty: 1-Year No-Fault Warranty Included
- Warranty Upgrade: Optional 2-Year No-Fault Warranty (+$450)
- Lead Time: Most rebuilds are completed within 5-10 business days after your engine is received
- Financing: Available
- Shipping: Work order and shipping instructions sent after purchase
Engine Rebuild Process
- Complete engine teardown, cleaning, and inspection
- Crankshaft remanufactured with a new connecting rod and precision trued
- Cylinder inspected, bored and honed to the next oversize, or replaced as required
- New moly-coated piston and piston rings installed
- Cylinder head cleaned, decked, rebuilt, and shimmed to manufacturer specifications
- Manganese bronze exhaust valve guide upgrade for improved durability
- Intake valve guides inspected and replaced when needed
- Valves and valve seats recut, then verified through vacuum testing
- Camshaft lobes and journals cleaned, polished, and replaced as necessary
- Timing chain and oil pump chain inspected and replaced as required
- Refurbished oil pump assembly
- Engine cases inspected for journal wear, cracks, and structural damage
- All gaskets and seals replaced
- Final assembly torqued to manufacturer specifications
- Quality control inspection completed before shipment
Your rebuilt engine includes the gaskets and seals required to complete installation.
Build Core Engine Program
Your original engine is the foundation of every REV6 rebuild. After checkout, we’ll send your work order and shipping instructions so you can prepare and ship your engine to our facility. Once it arrives, we evaluate the core, complete the required machining and rebuilding procedures, and perform a final inspection before return shipment.
Because every engine arrives in a different condition, some rebuilding procedures may vary based on the inspection results.
Warranty & Production Information
Every rebuilt Polaris RZR Trail S 1000 engine includes a 1-Year No-Fault Warranty. Riders looking for additional coverage can upgrade to our optional 2-Year No-Fault Warranty for an additional $450.
Most Build Core engines are completed within 5-10 business days after your engine is received. If you’re planning around a riding trip or repair schedule, contact our team for the latest production updates.
Review complete warranty information on our Warranty Policy. Financing options are available through our Financing page.
Helpful Resources
Before sending your engine, review our Engine Shipping Instructions. If you have questions about fitment or the rebuilding process, visit our Help Center or contact our team. You can also browse the REV6 Blog for technical articles and engine maintenance tips.
Send Your Engine When You’re Ready
Once your order is complete, we’ll provide everything you need to ship your engine to REV6. From initial inspection through final assembly, every rebuild is completed with attention to detail before your engine is returned ready for installation.
Eligible U.S. veterans and active-duty military personnel can receive special pricing through our military discount program. Contact REV6 before ordering for complete details.












