PISTON KIT 74.00 CR 9.5:1 YFM250RX 08-13, XT250 13-19, WISECO 4951M07400 YAMAHA ATV
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The Wiseco forged piston kit features a 74.00mm bore and a 9.5:1 compression ratio. This high-performance piston is forged for strength and durability, with a moly skirt coating to reduce friction and wear. It is manufactured in the USA and serves as a direct OEM replacement. Specifications include a displacement of 249 cc, an actual bore diameter of 73.95mm, and a stroke of 58.00mm. The kit includes a piston, ring set (2913XA), locks (CW17), and pin (S688). Part number 4951M07400.
- SKU
- 56-W4951.7400.WI
- Brand
- Wiseco
- Availability
- In Stock (1)
Fitments (14)
| Make | Model | Year |
|---|---|---|
| YAMAHA | XT 250 | 2013 |
| YAMAHA | XT 250 | 2014 |
| YAMAHA | XT 250 | 2015 |
| YAMAHA | XT 250 | 2016 |
| YAMAHA | XT 250 | 2017 |
| YAMAHA | XT 250 | 2018 |
| YAMAHA | XT 250 | 2019 |
| YAMAHA | XT 250 | 2020 |
| YAMAHA | YFM RAPTOR 250 | 2008 |
| YAMAHA | YFM RAPTOR 250 | 2009 |
| YAMAHA | YFM RAPTOR 250 | 2010 |
| YAMAHA | YFM RAPTOR 250 | 2011 |
| YAMAHA | YFM RAPTOR 250 | 2012 |
| YAMAHA | YFM RAPTOR 250 | 2013 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 74mm
- Variant Id
- 256428
FULL DESCRIPTION
Wiseco 74.00mm Forged Piston Kit 9.5:1 Compression
Enhance your motorcycle's performance and reliability with the Wiseco 74.00mm Forged Piston Kit. This high-strength, direct replacement piston is engineered for superior durability and efficiency, featuring a precision moly skirt coating to minimize friction and wear for extended engine life. Manufactured with meticulous in-house control over forging and machining processes, this piston is built to meet demanding performance standards. Proudly made in the USA, it ensures top-tier quality and exceptional performance for your engine.
Key Features:
- Forged Piston: Offers exceptional strength, resilience against impact, and resistance to fatigue for demanding applications.
- Moly Skirt Coating: Reduces friction and improves wear resistance, contributing to a longer piston and cylinder life.
- In-House Manufacturing: Guarantees full control over the forging and machining processes for consistent quality.
- Direct OEM Replacement: Designed for a seamless fit and function as a direct replacement for original equipment.
- Made in USA: Ensures adherence to high manufacturing standards and quality control.
Specifications:
- Displacement: 249 cc
- Bore (Standard): 74.00 mm
- Actual Bore Diameter: 73.95 mm
- Stroke: 58.00 mm
- Compression Ratio (Actual): 9.5:1
- Skirt Coating: Moly
- Bore Oversize: STD
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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