CROSS REFERENCE PART NUMBERS:
• Yamaha 1SL-116A0-00-00
• Yamaha B2W-116A0-00-00
• Yamaha BHR-116A0-00-00
• Yamaha BR9-116A0-00-00
• Pro-X 01.2444.A
ITEM SPECIFICATIONS:
• Component: Piston Kit (Size A, Standard Bore)
• Piston Size: 96.95mm (Size A)
• Bore x Stroke: 97.0mm x 60.8mm
• Displacement: 449cc
• Compression Ratio: 12.5:1
• Kit Contents: Piston, Rings, Wrist Pin, Circlips
• Material: Forged Aluminum Alloy Piston
• Engine: 449cc Liquid-Cooled 4-Stroke DOHC 4-Valve Single-Cylinder
• Model Years: 2014-2025 (YZ450F), 2016-2025 (WR450F/YZ450FX)
COMPATIBLE MODELS:
Yamaha YZ450F / WR450F / YZ450FX:
• YZ450F (2014-2025)
• WR450F (2016-2025)
• YZ450FX (2016-2025)
PRODUCT DETAILS:
Direct replacement piston kit engineered for the Yamaha YZ450F, WR450F, and YZ450FX sharing the same 449cc liquid-cooled 4-stroke DOHC 4-valve 97mm bore engine. The Size A piston at 96.95mm provides factory-specified piston-to-wall clearance within the standard 97mm cylinder bore for optimal ring seal across the full RPM range. Kit comes complete with forged aluminum alloy piston, precision-fitted piston rings, hardened wrist pin, and retaining circlips for a comprehensive top-end rebuild. Precision machined on CNC equipment using premium forged aluminum alloy for reliable sealing and consistent power delivery in motocross and off-road conditions. The YZ450F, WR450F, and YZ450FX feature Yamaha's proven liquid-cooled DOHC engine with four titanium valves for competitive motocross, enduro, and cross-country. This piston kit ensures proper fit and dependable performance for all YZ450F 2014-2025, WR450F 2016-2025, and YZ450FX 2016-2025 models.
PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.
WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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