My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Wiseco Pistons 520M04850 High-Performance Piston Kit 48.50mm +0.50mm Oversize

(1985-1987 Yamaha YZ80)

Manufacturer

Part Number

520M04850
Sale Price

$127.99

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Wiseco 520M04850 is a high-performance piston kit designed for single-cylinder applications requiring a 48.50mm bore size (+0.50mm oversize). Engineered with a dedicated forging process using aerospace-grade alloy, this piston delivers an exceptional strength-to-weight ratio that has been proven in professional racing applications across multiple motorsport disciplines.

Key Features:

  • CNC machined construction with optimal cam shape and profile for maximum horsepower and extended service life
  • Precision-engineered from highest quality materials to reduce friction and increase durability
  • High-performance ring set designed for extended life and sustained power delivery
  • Premium alloy wrist pin ensures consistent performance and reliability
  • Race-proven design trusted by top professional racing teams

Technical Specifications:

  • Standard Bore: 48.00mm
  • Actual Bore: 48.50mm (0.50mm oversize)
  • Stroke: 45.60mm
  • Displacement: 84cc
  • Single cylinder application

Kit Includes:

  • 1 piston
  • 1 ring set (1909CS - 48.50mm)
  • 1 wrist pin (S538 - 12mm x 1.5354" unchrome plated)
  • 2 circlips (CW12 - round wire pin locks 12mm)

Important Note: This kit covers a single cylinder only. Top-end bearings, gaskets, and sleeves are sold separately. Wiseco piston kits are application and bore-size specific—verify your engine's standard bore size before ordering to ensure you select the correct oversize.

Products specifications

Fits

1985-1987 Yamaha YZ80

Site was easy to navigate

Great service

.

Need more specific details on item.

I had to enter my vehicle info a couple of times in the same session when searching for parts.

Easy to navigate website, and most importantly, the part NOBODY else had you guys did. Awesome!

great experience no problems Its great you link to pay pal and Amazon for payment

East to order

PRICE WAS EXCELLENT, PRODUCT WAS EXCELLENT, THREE DAY WAIT TO BE SHIPPED WAS LESS THAN EXCELLENT. YES, I SAW THAT WHEN I ORDERED, $20 FOR TWO DAY SHIPPING WAS A WAIST AS IT TOOK THREE DAYS AND A SUNDAY (4) DAYS PLUS 2 DAYS SHIPPING TIME 6 DAYS. TRACKING NUMBERS ARE ALWAYS NICE, THANK YOU FOR THAT. THANKS ALSO FOR HANDLING QUALITY PARTS. I WOULD STILL GIVE YOU 4 STARS BECAUSE I WOULD STILL ORDER PARTS FROM YOU!

First time shopper

Very fast with the Amazon pay option

Great selection and after checking multiple site (>10), Autoplicity was the on site that had the item I was searching for. I was extremely pleased with selection and service.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy