TRX250R Complete Rebuild Kit – 66mm Stock Bore 1986–1989

SKU 255978015813

🔥 Honda TRX250R Engine Rebuild Kit – 1986–1989 / Stock Bore (66mm)
Built for Reliability | Drop-In Fit | OEM Replacement Kit

This complete engine rebuild kit fits all 1986–1989 Honda TRX250R models and delivers a high-performance refresh with no machining required. Featuring a forged 66mm stock bore piston and Hotrods crank, this kit is perfect for restoring your 250R — whether it’s stock or lightly modified.

✅ Fits all Honda TRX250R models from 1986 to 1989
✅ 66mm stock bore Wiseco or Wössner forged piston
✅ True bolt-on install — no case boring needed
✅ Compatible with pump or race gas

📦 What’s Included:

• ✔️ Wiseco or Wössner 66mm Forged Piston (Stock Bore)

• ✔️ Nitrite-Coated High-Temp Ring Set

• ✔️ Chrome Wristpin & Circlips

• ✔️ Wristpin Bearing

• ✔️ Hotrods Heavy-Duty Crankshaft (Assembled with Rod)

• ✔️ Crankshaft Main Bearings

• ✔️ Transmission Bearings

• ✔️ Crank Balancer Bearings

• ✔️ Clutch Arm Needle Bearings

• ✔️ Water Pump Bearing

• ✔️ Water Pump Mechanical Seal

• ✔️ Complete Gasket Kit – Top & Bottom End

• ✔️ Full Engine Oil Seal Kit

• ✔️ Heavy-Duty Clutch Kit (Fibers, Steels, Springs)

• ✔️ Talon Titanium Head Stud Kit – Lifetime Warranty*

⚙️ Key Features:

• 🧱 Forged Piston Options – Wiseco or Wössner (based on stock)

• 🔩 Titanium Studs – Grade 5 titanium, reusable, lifetime coverage

• 💥 Full Top & Bottom End Refresh – Bearings, seals, gaskets included

• 🧰 Drop-In Fit – Designed for OEM cases and cylinder

• 📦 All Parts Are Brand New – Factory Sealed

📌 Vehicle Compatibility:

🛡️ Warranty & Installation:

• ✔️ Titanium Studs – Lifetime Replacement Warranty*

• ✔️ All Other Parts – 6-Month Warranty on Manufacturer Defects

• ⚠️ Professional Installation Strongly Recommended

• 🔍 All warranty claims require returned product for inspection

• 🚫 No coverage for DIY assembly, improper break-in, or tuning errors

📦 Handling Time:

Ships in 5–7 business days — hand-packed by our small team of experienced ATV parts experts.

💬 Customer Support:

Available Monday–Friday, 7 AM to 4 PM PST
Live Chat Available 24/7