Vertex Complete Engine Rebuild Kit WR101-056 — KTM 85 SX 2003-2012

Vertex Complete Engine Rebuild Kit WR101-056 — KTM 85 SX 2003-2012

Product Description

The Vertex Complete Engine Rebuild Kit is the ultimate one-stop shop in a box for riders looking to restore factory performance to their 2-stroke machine. Designed specifically for the KTM 85 SX, this kit eliminates the hassle of tracking down individual parts by combining everything needed for a professional, top-to-bottom engine overhaul.

This comprehensive package features a premium Vertex standard compression piston kit paired with a heavy-duty Hot Rods crankshaft and specialized main, transmission, and water pump bearings. Every component is engineered to withstand intense motocross racing, giving riders maximum power transfer, exceptional reliability, and ultimate confidence on the track.

Top Features: Vertex Complete Engine Rebuild Kit
o Convenient All-In-One Box: Includes nearly every component required for a professional top and bottom end overhaul.
o Vertex Piston Kit: Features a high-quality standard compression piston, premium rings, wrist pin, and clips for optimal combustion.
o Hot Rods Heavy-Duty Crankshaft: Built to stock stroke specifications and includes a durable wrist pin bearing.
o Complete Gasket & Bearing Kits: Contains Vertex gaskets, O-rings, oil seals, plus Hot Rods main, transmission, counter balancer, and water pump bearings.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2003 - 2012	KTM	85 SX

Frequently Asked Questions

Q: Does this kit include both the top and bottom end gaskets?
A: Yes, the kit includes a complete Vertex gasket set, along with an oil seal and O-ring kit that fully covers both the top and bottom ends of the engine.

Q: Is the piston in this kit standard size or an oversize option?
A: This kit comes with a standard compression Vertex piston designed to match original equipment manufacturer (OEM) technical specifications.

Expert Pro-Tip: When splitting cases for a total engine overhaul, always clean the crankcase surfaces thoroughly and avoid using metal scrapers that can gouge the aluminum. Before dropping the new Hot Rods crank in, freeze the main bearings and gently heat the case around the bearing bore with a heat gun—they will slip right in without requiring heavy pounding, preserving the precision alignment of your new crankshaft assembly.

Recommended Pairings:
o KTM 85 SX Performance Parts & Upgrades
o KTM 2-Stroke Performance Parts
o Premium Motorcycle Chemicals Performance Parts

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

Moto-House MX – Choice of Champions – Clermont / Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.