Fits All Polaris RZR PRO R & PRO XP TURBO Models
Designed for the most demanding riders, this complete rebuild kit includes forged pistons, Hot Rods crank, and the EPI Duner clutch kit for ultimate reliability and performance. Built with premium components throughout, this is the go-to engine package for power, durability, and peace of mind.
Wossner, Wiseco, or CP Forged Pistons
Hi-Temp Coated Piston Rings
Chrome Wristpins & Circlips
Hot Rods Crankshaft Assembly
OEM Polaris Connecting Rods
Rod, Crank, and Counter Balancer Plain Bearings
EPI Duner Clutch Kit
Upgrade to Severe Duty Belt for $130 more
Complete Gasket Kit
Cometic MLS Head Gasket
Complete Engine Seal Kit
Valve Stem Seals
Water Pump Mechanical Seal
Timing Chain
Oil Pump Chain
Titanium Head Stud Kit – Lifetime Warranty
K&N Oil Filter
NGK Iridium Spark Plugs
All Parts Are Brand New
Pistons Run on Pump or Race Gas
Forged Pistons – Built to handle serious power
Hot Rods Crank + OEM Rods – Reliable rotating assembly
Titanium Studs – Guaranteed for life
EPI Clutch – Tuned for dunes & aggressive terrain
✔️ Fits All Polaris RZR PRO R & PRO XP TURBO Models
📅 Covers all years and trims
❌ Not compatible with XP1000 or non-turbo models
1-Year Limited Warranty on qualifying parts
Titanium Head Studs – Lifetime Replacement Warranty
Warranty requires installation by a qualified professional
Failed parts must be returned for inspection — no exceptions
No warranty for misuse, poor tuning, or lack of maintenance
30-Day Returns on brand-new, unused kits
Buyer remorse returns subject to 10% restocking fee + shipping
We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.
We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.
Sold items are removed daily.
If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.
If you call we answer, if you text we respond, if you have a question we respond. Sometimes we sleep so it could be next morning but we will respond.
Thank you for shopping with us! We appreciate you!
Go Check out the Facebook Private group DUNE GOONS! No advertising of any kind here. Just real people.
Check us out on Instagram @Dune.Goons and give us a follow for full sends!
Download our Anthem Song by Mac Moss. Also available on Spotify, Amazon Music, and Pandora.
I received the Cam, But there were no instructions.
Banshee - Dipstick & Oil Plug Billet - Modquad
My 400ex has never sounded better. New tensioner, guides, and chain fixed the noise. Metal bottom end gasket was cool too, didn't rip while working on it.
Thank you for your positive review! We're glad to hear that the TRX400EX Cam Chain Tensioner & Wiseco Heavy Duty Cam Chain Kit was able to fix the ticking noise on your 400ex. We agree, these small maintenance steps can make a big difference in the overall performance and sound of your vehicle. We appreciate your feedback and hope to continue providing quality products for your ATV. Happy riding!
Well my mechanic said it was some good parts in the box. I'll let you know how the rebuild goes. Great I hope
I haven’t received them yet
Trevor, thank you for your 5 star review. We appreciate that. Rest assured I just checked your tracking info and UPS says they will arrive today between 1:30 & 3:00 pm. Your going to love the Lectron Carburetors!