PISTON KIT YZF450 14-17 97.00, PROX 01.2444.A YAMAHA
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
ProX Piston Kit 01.2444.A for YZF450 14-17 with a 97.00mm bore and 12.5:1 compression ratio. Precision CNC-machined from a low-expansion, low-friction alloy, this piston kit meets OEM standards for high-performance engines. It is suitable for motorcycles, scooters, mopeds, ATVs, and personal watercraft. Cross-reference OEM part numbers: 1SL-116A0-00-00, 1SL-11631-00-00, 33D-11603-00-00, 93450-19052-00, 33D-11633-00-00.
- SKU
- 56-W4963.A.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (2)
Fitments (28)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 450F | 2016 |
| YAMAHA | WR 450F | 2017 |
| YAMAHA | WR 450F | 2018 |
| YAMAHA | WR 450F | 2019 |
| YAMAHA | WRF 450 | 2016 |
| YAMAHA | WRF 450 | 2017 |
| YAMAHA | WRF 450 | 2018 |
| YAMAHA | WRF 450 | 2019 |
| YAMAHA | YZ 450F | 2014 |
| YAMAHA | YZ 450F | 2015 |
| YAMAHA | YZ 450F | 2016 |
| YAMAHA | YZ 450F | 2017 |
| YAMAHA | YZ 450F | 2018 |
| YAMAHA | YZ 450F | 2019 |
| YAMAHA | YZ 450FX | 2016 |
| YAMAHA | YZ 450FX | 2017 |
| YAMAHA | YZ 450FX | 2018 |
| YAMAHA | YZ 450FX | 2019 |
| YAMAHA | YZF 450 | 2014 |
| YAMAHA | YZF 450 | 2015 |
| YAMAHA | YZF 450 | 2016 |
| YAMAHA | YZF 450 | 2017 |
| YAMAHA | YZF 450 | 2018 |
| YAMAHA | YZF 450 | 2019 |
| YAMAHA | YZF X 450 | 2016 |
| YAMAHA | YZF X 450 | 2017 |
| YAMAHA | YZF X 450 | 2018 |
| YAMAHA | YZF X 450 | 2019 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 97mm
- Variant Id
- 295761
FULL DESCRIPTION
ProX Piston Kit - High-Performance Engine Replacement
ProX Piston Kits offer precision-engineered replacements designed for high-performance engines. These kits utilize a low-expansion, low-friction alloy, mirroring the materials used by leading Japanese manufacturers. Manufactured on state-of-the-art CNC machinery, this piston kit is built to meet exacting standards for a variety of powersports vehicles.
Key Features:
- Precision CNC-machined piston for accurate fit and performance.
- Constructed from a specialized low-expansion, low-friction alloy.
- Designed as a high-quality replacement part.
Specifications:
- Bore Size: 97.00mm
- Compression Ratio: 12.5:1
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
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.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. 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
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


