PISTON KIT KXF RMZ 250 77.00 A, PROX 01.4335.A
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 18+, T&Cs apply
ProX 4-stroke piston kit with a 77.00mm bore. Includes piston rings, wrist pin, and circlips for ready installation. Pistons are precision machined using a low-expansion, low-friction alloy. Features OEM style tin coating for break-in assistance. Replacement parts: piston rings 02.4334, piston pin 04.1645, piston clips 05.1612C.
- SKU
- 56-W4842.A.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (2)
Fitments (12)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 250F | 2004 |
| KAWASAKI | KX 250F | 2005 |
| KAWASAKI | KX 250F | 2006 |
| KAWASAKI | KX 250F | 2007 |
| KAWASAKI | KX 250F | 2008 |
| KAWASAKI | KX 250F | 2009 |
| SUZUKI | RM-Z 250 | 2004 |
| SUZUKI | RM-Z 250 | 2005 |
| SUZUKI | RM-Z 250 | 2006 |
| SUZUKI | RM-Z 250 | 2007 |
| SUZUKI | RM-Z 250 | 2008 |
| SUZUKI | RM-Z 250 | 2009 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 256237
FULL DESCRIPTION
ProX Piston Kit - 77.00mm Bore
This ProX Piston Kit is designed for high-performance 4-stroke engines, featuring a precise 77.00mm bore diameter. Each kit is supplied ready for immediate installation, including all necessary components: piston rings, wrist pin, and circlips.
ProX pistons are manufactured using advanced CNC equipment, ensuring exceptional precision. They are constructed from a low-expansion, low-friction alloy, identical to the material used by major Japanese engine manufacturers. To aid in the initial break-in period, these pistons feature an OEM-style tin coating, promoting a smooth and efficient start-up process for your machine.
Key Features:
- 77.00mm Bore Diameter
- Complete Kit: Includes Piston Rings, Wrist Pin, and Circlips
- Precision Machined: Utilizes state-of-the-art CNC equipment
- High-Quality Alloy: Low-expansion, low-friction material
- OEM Style Tin Coating: Assists in break-in process
- Direct Replacement Parts
Replacement Parts Available Separately:
- Piston Rings: 02.4334
- Piston Pin: 04.1645
- Piston Clips: 05.1612C
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
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
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.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


