PISTON KIT 16-18 YZF250 77.00, PROX 01.2417.A 1SM-11631-10-00, 13.5:1 (76.95mm)
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ProX Piston Kit 13.5:1 (76.95mm). Ready to install, ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest, state of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. Uses an OEM style tin coating to assist the break-in process. Replacement ring set: 02.2417. PROX 01.2417.A.
- SKU
- 56-W4966.A.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (2)
Fitments (15)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 250F | 2018 |
| YAMAHA | WR 250F | 2019 |
| YAMAHA | WRF 250 | 2018 |
| YAMAHA | WRF 250 | 2019 |
| YAMAHA | YZ 250F | 2016 |
| YAMAHA | YZ 250F | 2017 |
| YAMAHA | YZ 250F | 2018 |
| YAMAHA | YZ 250FX | 2017 |
| YAMAHA | YZ 250FX | 2018 |
| YAMAHA | YZ 250FX | 2019 |
| YAMAHA | YZF 250 | 2016 |
| YAMAHA | YZF 250 | 2017 |
| YAMAHA | YZF 250 | 2018 |
| YAMAHA | YZF X 250 | 2017 |
| YAMAHA | YZF X 250 | 2018 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 280505
FULL DESCRIPTION
ProX Piston Kit 13.5:1 (76.95mm)
This ProX Piston Kit is engineered for high performance and durability, featuring a 13.5:1 compression ratio and a precise 76.95mm bore size.
Each ProX Piston Kit is designed for direct installation and includes all necessary components:
- Piston
- Piston rings
- Wrist pin
- Circlips
ProX pistons are manufactured using advanced CNC machinery, ensuring exceptional precision. They are constructed from a low-expansion, low-friction aluminum alloy, mirroring the materials used by major Japanese engine manufacturers. This ensures optimal performance and longevity.
To aid in the crucial break-in period, ProX pistons feature an OEM-style tin coating. This coating helps to facilitate a smooth initial run-in process for your engine.
Specifications:
- Compression Ratio: 13.5:1
- Bore Diameter: 76.95mm
- Material: Low-expansion, low-friction aluminum alloy
- Coating: OEM-style tin coating for break-in
- Included components: Piston, rings, wrist pin, circlips
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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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