Honda CRF250RX Piston Kit - Wiseco - 13.9:1 CR - 2019. A direct-fit forged piston kit engineered for the Honda CRF250RX (2019) and compatible with CRF250R models from 2018–2019, offering a 79.00 mm bore and a 13.9:1 compression ratio for riders seeking a reliable replacement or performance-focused rebuild component.

This Wiseco Forged Series piston is built for 4-stroke applications and supplied as a complete kit that includes the piston, wrist pin, rings, and circlips for straightforward installation. The forged aluminum construction is specified to provide consistent strength and service life under higher stress than typical cast pistons. The 13.9:1 compression ratio and precise bore sizing support tuned rebuilds and aftermarket head combinations where higher compression is required. The kit is practical for dirt bike enthusiasts who want an OEM-fit replacement that also serves as a solid base for engine customization.

Features

• Wiseco forged piston — engineered for strength and durability
• Complete kit: piston, wrist pin, rings, and circlips included
• 79.00 mm bore; 13.9:1 compression ratio — specified for CRF250RX (2019)
• Compatible with Honda CRF250R (2018–2019) and CRF250RX (2019) applications

If you have questions or need help confirming fitment, call us directly — we’re happy to assist: 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services in Austin, Texas and the Los Angeles, California area. If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov