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Engines and Components› Pistons and Piston Rings
Wiseco
Wiseco 4 Stroke Forged Series Piston, 3.503 in. Bore
SKU: W00C 4725P05
Advanced — 4+ hours
Overview
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Part #: 4725P05
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.
Features:
- Engineered, forged, and machined in the USA in Mentor, OH
- Improved tensile strength of forged material optimizes strength and service life
- Designed and built specifically for each V-Twin engine platform
- Optimized compression ratio to fit your build and performance goals
- Wrist pin, rings and circlips included
Wiseco 4 Stroke Forged Series Piston, 3.503 in. Bore
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Vehicle Symptoms
- Excessive blue smoke from exhaust on startup and acceleration
- Loss of engine power and sluggish acceleration
- Low compression readings across one or more cylinders
- Engine knocking or rattling noise from the piston area
- High oil consumption between oil changes
Relevant Conversations
- Harley Evo 80 low compression causes and fix
- Wiseco 4725P05 1340 piston kit review
- Blue smoke from exhaust after warm up Harley
- How to install Wiseco forged pistons in Evo
- Wiseco vs JE pistons for Harley 1340
- Oil consumption Harley Evo rebuild options
- Best piston kit for 1340 Harley performance
- Evo 80 knocking noise piston slap symptoms
- Harley 1340 piston ring replacement guide
- Co-purchase: Wiseco piston kit + cylinder bore
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Wiseco |
| Part Number | W00C 4725P05 |
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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