HONDA CRF 250R 2018-2019 GRADE C 81.98mm BIG BORE PISTON 13.9:1
4.4 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Forged piston with T-bridge inspired by F1. Special racing profile to maximize compression without loss of reliability. Vertex four-stroke pistons are forged from high-quality 2618 aluminum alloy, suitable for modern four-stroke engines. Utilizes a unique Molybdenum Disulphide MOS2 coating on the piston skirt to aid in break-in and reduce wear. Piston profiles and compression ratios offered in A, B, C, and D sizes, varying by 0.01mm, allow for perfect sizing to the cylinder for maximizing power and performance while reducing blow-by and oil consumption. 81.98mm bore size, 13.9:1 compression ratio. Grade C.
- SKU
- V.4348C
- Brand
- Vertex
- Availability
- In Stock (1)
- SKU
- V.4348C
- Brand
- Vertex
- Availability
- In Stock (1)
FULL DESCRIPTION
Vertex GP Racers Choice High-Compression Big Bore Piston
Upgrade your engine performance with the Vertex GP Racers Choice forged piston. Engineered for riders who demand power and reliability, this high-performance component features a unique T-bridge design inspired by Formula 1 technology. This advanced geometry provides a specialized racing profile that maximizes compression ratios without compromising the longevity of your engine.
Vertex four-stroke pistons are forged from premium 2618 aluminum alloy, ensuring they can withstand the extreme pressures and high-stress environments of modern racing engines. Every piston is finished with a Molybdenum Disulphide (MOS2) coating on the skirt, which significantly reduces friction, assists in the break-in process, and minimizes overall engine wear.
Key Features
- GP Racers Choice Technology: Advanced T-bridge architecture for superior strength and weight reduction.
- Premium Material: Constructed from 2618 aluminum alloy for exceptional durability under high-pressure conditions.
- MOS2 Skirt Coating: Specialized Molybdenum Disulphide coating reduces drag and protects the cylinder bore during the critical break-in phase.
- Optimized Performance: Engineered to maximize power output while reducing blow-by and oil consumption.
- Precision Sizing: Designed with meticulous attention to detail to ensure a perfect fit, providing maximum performance efficiency.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Call or email us with your make, model and year 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.