Honda CRF450R 100mm Big Bore +3mm Stroker Engine Kit 02–06

Honda CRF450R 100mm Big Bore +3mm Stroker Engine Kit 02–06

Regular price$1,699.99
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🛠️ 100mm Big Bore +3mm Stroker Engine Kit – Honda CRF450R (2002–2006)

Designed for high-performance rebuilds, this complete engine kit includes a 100mm nikasil big bore cylinder and a +3mm stroker crank, increasing overall displacement and improving torque throughout the powerband. Includes a Stage 3 cam and upgraded internals for dependable power.

Fits all 2002–2006 Honda CRF450R models
✅ All parts are brand new and covered by warranty


📦 Kit Includes:

  • 100mm BPRATV Big Bore Nikasil-Plated Cylinder (1-Year Warranty)

  • JE or CP Carrillo Forged Piston Kit (brand depends on availability)

  • High-Temp Piston Rings

  • Chrome Wristpin & Circlips

  • Hotrods +3mm Stroker Crankshaft with Connecting Rod

  • Hotcams Stage 3 Camshaft

  • Cam Bearing

  • Main Bearings

  • Water Pump Bearing

  • Transmission Bearings

  • Complete Gasket Kit

    • Includes Cometic MLS Head Gasket

  • Complete Water Pump Rebuild Kit

    • Bearing, mechanical seal, shaft, O-ring

  • BPRATV Heavy-Duty Timing Chain

  • BPRATV Talon Clutch Kit – Fibers, steels, springs

  • Titanium Head Stud Kit

  • Spark Plug


🔧 Key Features:

  • Big bore and stroker combo for increased displacement and power

  • Camshaft and timing chain upgrades for enhanced top-end reliability

  • Heavy-duty internals built to handle high-performance use

  • All components are direct fit and require no machining


📦 Shipping Time:
Ships within 5–7 business days. Tracking will be sent upon shipment.

💬 Customer Support:
Available Monday–Friday, 7 AM to 4 PM PST. Our store chat is open 24/7.

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.

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