My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Wiseco KE321M865 Forged Piston Kit BMW M50B30 S50B30 86.5mm Bore 12.0:1 Compression

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

KE321M865
14 reviews
Sale Price

$1,157.99

Estimated ship date Thursday, November 19

Check out with

ApplePay
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 KE321M865 is a high-performance forged piston kit engineered for BMW 3.0L M50B30 and S50B30 engines. This complete racing piston kit features a +0.5mm oversize bore diameter of 86.5mm and delivers a 12.0:1 compression ratio for increased power output and performance.

Key Specifications:

  • Bore Diameter: 86.5mm (+0.5mm oversize)
  • Compression Ratio: 12.0:1
  • Wrist Pin Diameter: 21mm (0.827 inches)
  • Rod Length: 142mm (5.590 inches)
  • Weight per Piston: 347 grams
  • Stroke: 85.8mm (standard)

Features:

  • Precision-forged construction for superior strength and durability
  • High compression design optimized for racing applications
  • Complete kit includes pistons, rings, wrist pins, and circlips
  • Improved tensile strength for enhanced service life
  • Designed specifically for BMW inline-6 cylinder engines

Wiseco has over 80 years of experience manufacturing high-performance pistons for racing and performance applications. Each piston is engineered to withstand the demands of high-RPM operation while maintaining optimal strength-to-weight ratio for maximum performance.

Cheapest place available for my eibach springs. good at responding to a question I had after ordering and quick shipping! Will definitely buy from again!

great service

So far so good

great deal

Recieved exactly what i wanted and and it only took 2 days to get here! will do business with again! A++++++

Quick order

Best price I found on a web..was in stock and received on time within the week..

Ordered my Cargo Liner on Tuesday got it in Saturday. Best price I could find on the Net, Fast delivery and great communications..will definitely buy from these guys again ****

Great prices.

I shopped around on the internet and Autoplicity was the most reasonable price for the same quality brand name locking hubs i was looking for. Only con was i read on internet they had free shipping and that wasn't so on my order which was disappointing.

I was looking around for a specific set of springs for my car for a good deal. I finally stumbled upon Autoplicity and found my lowest price. I called in to get more information about my order and the customer service was reliable and friendly. I will definitely do business with this site again. I would also like to say that my order was out of stock a day before I ordered. Even so, my springs will be here shortly.

great

Wow shipped quick easy to order thanks

thank you'

Share icon
Return Policy
Returns are easy at Autoplicity

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