Vertex WR101-018 Engine Rebuild Kit – Honda CR85R / CR85RB (2005-2007)
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Vertex Complete Engine Rebuild Kit – Honda CR85R / CR85RB Expert (2005 – 2007) (WR101-018 / 0903-0958)
Description
The Vertex WR101-018 Engine Rebuild Kit (0903-0958) delivers a full OEM-quality overhaul for the 2005-2007 Honda CR85R and CR85RB Expert two-stroke engines. This all-in-one kit includes everything needed to restore factory compression, throttle response, and smooth operation — all in one convenient box.
Built with Hot Rods and Vertex components, this kit is perfect for race prep, trail rebuilds, or high-rev youth MX engines that need professional-level durability and fitment.
What’s Included
✅ Hot Rods heavy-duty crankshaft (stock stroke with wrist pin bearing)
✅ Vertex piston kit (piston, rings, pin & clips)
✅ Complete engine gasket & O-ring kit (top + bottom end)
✅ Main bearing and seal kit
✅ Transmission bearing kit (includes output shaft collar and sprocket lock washer)
✅ Counter balancer bearing kit
✅ Water pump bearing and seal kit
✅ Oil seal kit
Fitment
📦 Fits the following models and years:
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2005 Honda CR85R
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2006 Honda CR85R
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2007 Honda CR85R
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2005 Honda CR85RB Expert
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2006 Honda CR85RB Expert
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2007 Honda CR85RB Expert
Key Features
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Complete 2-stroke engine rebuild kit (top + bottom end)
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OEM-level fitment and race-ready reliability
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Includes crankshaft, piston, bearings, and gaskets
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Restores compression and power delivery
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Ideal for youth MX racers and track-ready builds
Warranty Info
Manufactured by Vertex / Wrench Rabbit.
Warranty claims and support handled directly through Vertex or Wrench Rabbit.
Price & SKU
💲 Retail Price: $462.95
SKU: WR101-018 / 0903-0958
Estimated Shipping Weight: 8.45 lb
Handling: Ships next business day
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.