Wiseco Harley 1340 (3537X-4724/4725P4) Piston Kit

V-Twin performance has been around since some of the earliest days of motorcycle racing and engine modification, and Wiseco has been there since the beginning. Applying over 80 years of experience, Wiseco has fine-tuned its V-Twin pistons for each specific engine platform to optimize performance and durability. From reliable rebuilds to all-out race, Wiseco has the pistons for your V-Twin build.

Additional Information

Wiseco 4 Stroke Forged Series Piston Kit, 3.538 in. Bore, 10:1 CR

Part Type

Engine Piston Set

• 3.538 in. Bore, 10:1 CR
• Dedicated forgings allow for optimized strength-to-weight ratio
• Designed and built for each specific 4-stroke powersports engine
• Designed and built specifically for each V-Twin engine platform
• Engineered, forged, and machined in the USA in Mentor, OH
• Improved tensile strength of forged material optimizes strength and service life
• Includes high-quality piston rings, wrist pin(s), and circlips
• Optimized compression ratio to fit your build and performance goals
• Wrist pin, rings and circlips included

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Piston and Ring Kit, Powersports, Forged, Aluminum, Harley-Davidson®, Kit

Wiseco powersports piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits provide strong, lightweight pistons with optimized designs that improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.