Wiseco PWR128102 Garage Buddy Complete Engine Rebuild Kit 66.40mm Bore

The Wiseco PWR128-102 Garage Buddy Complete Engine Rebuild Kit is an all-in-one solution for a full bottom and top end engine rebuild. Engineered specifically for the Kawasaki KX250 2-stroke, this kit delivers everything needed to restore your engine to like-new performance — all under a single part number, in one convenient box.

Wiseco's Garage Buddy kits are precision-machined to exacting tolerances, with every component selected and validated by Wiseco's in-house engineers using real-world R&D testing including dyno runs, hand inspection, and failure analysis. The result is a rebuild kit that meets or exceeds OEM quality standards.

Kit Contents:

• Complete crankshaft assembly (W5805 – 24mm x 59mm hollow crank pin)
• WPR133 rod kit
• 617M06640 Wiseco ProLite 2-stroke forged piston (66.40mm standard bore)
• 2614CD ring set (66.40mm)
• S508 wrist pin – 18mm x 2.106" non-chromed
• B1022 top end / small end bearing – 18 x 22 x 23.5mm
• B1050 crank pin bearing – 24 x 32 x 19.8mm
• B5011 main bearing – 28 x 68 x 18mm (OEM quality)
• W5979 thrust washers (2) – 24mm ID x 1.5mm
• W5350 top end gasket kit
• WB1091 bottom end gasket kit (all seals and O-rings included)
• W8063 Wiseco hour meter with W8062 universal mounting bracket
• Garage Buddy hour meter decal

Key Features:

• ProLite 2-stroke forged piston – CNC machined for optimal cam profile, delivering peak horsepower and extended service life
• Precision crankshaft assembly – designed entirely by Wiseco engineers and batch-inspected for crank run-out and trueness within strict tolerances
• Complete gasket coverage – all top end and bottom end gaskets, seals, and O-rings included for reliable OEM-quality sealing
• Horizontal slot-pin oiling – reduces friction and provides scuff resistance with a pressure seal groove for maximum ring seal
• Hour meter included – track critical maintenance intervals and engine hours right from your first ride after the rebuild
• 90-day / 10-hour warranty – covered against manufacturer defects
• Single part number convenience – everything ships in one box, eliminating the risk of missing components

The PWR128-102 Garage Buddy kit is built to the same standards trusted by professional race teams competing in Supercross, Motocross, and GNCC. Whether you're doing scheduled maintenance or recovering from an engine failure, this kit gets your KX250 back on the track with confidence. Standard bore size is 66.40mm (STD).