YZ80 Forged Piston 1985-1987 - 49.5mm – 8186D150
4.4 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
- SKU
- WOSS_8186D150
- Brand
- Wossner
- Availability
- In Stock (2)
- Bore Size
- 49.5mm
- Clip Part Number
- CW12
- Compression Height
- 26.8mm
- Cylinders
- 1
Show more +19Show less
- Displacement Cc
- 82cc
- Dome / Bowl Volume
- 1.73cc
- Kit Part Number
- 8186
- Number Of Rings
- 1
- Original Sku
- 8186D150
- Over Size
- 1.5mm
- Pin Part Number
- WP091
- Pin Size
- 12mm
- Piston Number
- 8186D150
- Piston Size
- 49.45mm
- Product Type
- Forged Piston Kit
- Qty Of Bearings Req
- 2
- Ring Part Number
- RSB4950
- Stroke
- 45.6mm
- Suits Woss Main Bearing
- MB6204C3
- Suits Woss Needle Bearing
- N1004
- Vehicle Make
- Yamaha
- Yom From
- 1985
- Yom To
- 1987
FULL DESCRIPTION
Forged Piston Kit, 49.5mm Bore
This forged piston kit for off-road motorcycle engines has a 49.5mm bore and a 49.45mm piston size. The compression height is 26.8mm, the pin is 12mm and the displacement is 82cc.
Specifications
- Bore size: 49.5mm
- Piston size: 49.45mm
- Oversize: 1.5mm
- Compression height: 26.8mm
- Pin size: 12mm
- Stroke: 45.6mm
- Displacement: 82cc
- Number of rings: 1
- Dome / bowl volume: 1.73cc
- Ring part number: RSB4950
- Pin part number: WP091
- Clip part number: CW12
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.
RELATED PARTS
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.