Piston Kit 14-15 YZF250 77.02, Forged Wossner 8893DC

Piston Kit 14-15 YZF250 77.02, Forged Wossner 8893DC. Find the product specifications and compatibility information below.

Product details

• Product: Piston Kit 14-15 YZF250 77.02, Forged Wossner 8893DC
• Part number: 56-W4961.C.WO
• Brand: Wossner
• This Wossner forged piston kit, part number 8893DC, features a 77.02mm bore with an actual piston size of 76.98mm (+0.02mm oversize). Designed for TM MX-F450 (2009–2010), MX-Fi450 (2011), and EN-Fi450 (2011), this German-made piston is engineered for performance with high strength, efficient heat transfer, and balanced load distribution through its elliptical profile, offering a compression increase over OEM specifications.
• Forged construction for strength and durability in performance applications
• Elliptical design supports even thermal expansion and thrust load distribution
• Optimized for efficient combustion heat transfer
• Made in Germany
• Direct OEM replacement
• Easy to install; professional installation recommended if unsure
• Bore Size: 77.02mm
• Actual Piston Size: 76.98mm
• Displacement: 249cm³
• Stroke: 53.60mm
• Clearance: 0.05mm
• Dome Volume: -3.00cm³
• Wossner Compression Ratio: 13.70:1
• OEM Compression Ratio: 13.50:1
• Compression Height: 20.20mm
• Cross-Reference OEM Part Numbers
• 40116M07700
• CW16 (Lock)
• WP087 (Pin)
• 770XAS-2 (Ring Set)

Vehicle fitment

Applications listed in the supplier fitment data:

• YAMAHA YZF X 250cc — 2015–2019
• YAMAHA WRF 250cc — 2015–2018
• YAMAHA WR F 250cc — 2015–2017
• YAMAHA YZ FX 250cc — 2015–2016
• YAMAHA YZ F 250cc — 2014–2015
• YAMAHA YZF X 250cc — 2015–2016
• YAMAHA WRF 250cc — 2015–2017
• YAMAHA YZF 250cc — 2014–2015
• YAMAHA YZF X 250cc — 2014–2015
• YAMAHA WRF 250cc — 2014–2017

Match your exact make, model, year and specification before ordering.

Why buy from FDY Performance?

FDY Performance is a UK motorcycle and ATV parts specialist. We help riders find parts with clear specifications, vehicle fitment information where available and support before ordering.

Need help choosing the right part?

Contact us with your bike make, model and year, plus the part number shown above, and we can help you check compatibility.

• Call: 07765 534854
• Email: fdy@fdyperformance.com
• Website: www.fdyperformance.com