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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
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Description
WISECO 0910-2853 4939M08550 Piston Kit Forged Series for 4-Stroke Piston Kit - 85.50 mm - YamahaFeatures Forged 4 stroke piston is designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength Dedicated forgings allow for optimized strength to weight ratio Ideal for multiple purpose riding Kit includes piston, wrist pin, rings and circlips Specs Displacement 420 cc Bore Oversize +1,00 mm Piston Diameter 85. 45 mm Piston Material Forged 2618 Aluminum Compression Ratio
Features
- Forged 4-stroke piston is designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength
- Dedicated forgings allow for optimized strength-to-weight ratio
- Ideal for multiple purpose riding
- Kit includes piston, wrist pin, rings and circlips
Specs
| Displacement | 420 cc |
| Bore - Oversize | +1,00 mm |
| Piston Diameter | 85.45 mm |
| Piston Material | Forged 2618 Aluminum |
| Compression Ratio | 11.0:1 |
| Riding Style | UTV |
| Bore Size | 85.50 mm |
| Stroke Length | 75.00 mm |
| Model | Forged Series |
| Riding Style | ATV |
| Bore - Oversize | +1.00 mm |
| Engine Type | 4-Stroke |
| Product Name | Piston Kit |
| Skirt Coating | ArmorGlide® |
| Units | Kit |
Part Notes
- Kit Includes:
- • 1x Piston
- • 1x Ring Set #8550XX
- • 1x Wrist Pin #S520
- • 1x Circlip Set #CW20
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 3
Not indestructible
Style: Two pack, Style: Two pack
Its not indestructible…my puppy Pitt mix has been chewing on it off and one for hours…its definitely destructible. Mind you shes a PUPPY. Shes only 1 year and 4 months old.
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Reviewed in the United States on February 25, 2026
★★★★★ 5
Very durable
Style: Two pack
These are great for my aggressive chewer. She still naws them down a bit after 6 months but not nearly as much as other toys. The size is perfect. It keeps her engaged in play. They do not squeek which is a plus.
The only worry I have is if she throws it in the air it might break something breakable.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Favorite bones for my dog
Size: Small, Color: Pink
Dog favorite bones, but broken fast pink bone. I buy multiple times.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Great for a teething puppy
Size: Small, Color: Pink
This is one of the best training collars we have used. So good that we ordered a second one so each dog has one and we have recommended it to several other people. It has 3 options, beeping, vibration and shock. Each option has several different settings. The collar comes in many different colors. It is very sturdy and it is waterproof. It is adjustable and the clip is very sturdy. I had previously bought a different training collar that did not phase my dog in the slightest and was a complete waste of money. It always seemed to be low on battery even after charging, this one however lasts like a week after charging. I will continue to use this brand for sure
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Reviewed in the United States on June 8, 2026
★★★★★ 5
The Toy Annie Always Comes Back To
Size: X-Small, Color: Pink
⭐⭐⭐⭐⭐
These have become one of Annie's all-time favorite toys.
Annie is a tiny 4-pound dog, and she can be surprisingly picky about toys. She has a basket full of options, but she consistently comes back to her nubby Nylabones.
I think the size and texture are a big part of why she likes them so much. They're easy for her to carry around, chew on, and play with by herself. Whenever I buy a new one, it quickly becomes part of her regular toy rotation.
As a small-dog owner, I appreciate finding toys that are appropriately sized and actually get used instead of being ignored after a few days.
If you have a tiny dog who loves to chew, these are definitely worth trying. They've been a favorite in our house for a long time.
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Reviewed in the United States on May 30, 2026