PISTON KIT POLARIS 500 99.20, WISECO 4807M09920
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
Wiseco 99.20mm piston kit. Piston ring info: 3905XK. Forged pistons offer superior strength and durability for extreme racing conditions compared to cast pistons. Forgings have condensed grain aligned to the part's features, providing higher mechanical properties and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio for maximum performance. Wiseco part no 4807M09920.
- SKU
- 56-W4807.WI
- Brand
- Wiseco
- Availability
- In Stock (2)
Fitments (7)
| Make | Model | Year |
|---|---|---|
| POLARIS | OUTLAW 500 | 2006 |
| POLARIS | OUTLAW 500 | 2007 |
| POLARIS | PREDATOR 500 | 2003 |
| POLARIS | PREDATOR 500 | 2004 |
| POLARIS | PREDATOR 500 | 2005 |
| POLARIS | PREDATOR 500 | 2006 |
| POLARIS | PREDATOR 500 | 2007 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 99.2mm
- Variant Id
- 256140
FULL DESCRIPTION
Wiseco 99.20mm High Compression Forged Piston Kit
Engineered for extreme racing conditions, this Wiseco forged piston kit offers superior strength and durability over traditional cast pistons. Forgings are exceptionally tough, designed to withstand the rigors of high-performance motorsport applications where material integrity is paramount.
Unlike brittle cast pistons that can fail catastrophically, Wiseco forgings feature a condensed grain structure that is meticulously aligned with the piston's design. This alignment results in enhanced mechanical properties, providing exceptional resistance to impact and fatigue. Each piston is carefully crafted to optimize the strength-to-weight ratio, ensuring maximum performance for your engine.
- Manufacturer: Wiseco
- Bore Size: 99.20mm
- Compression Ratio: 12.5:1 (High Compression)
- Material: Forged Aluminum
- Included Piston Rings: Wiseco 3905XK
- Benefits: Increased toughness, superior durability, enhanced resistance to impact and fatigue, optimized strength-to-weight ratio for maximum performance.
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.


