Select Your Ride

1
2
3

WSM Piston Kit - Polaris 500 - +.25 mm 50-311-04K

Part Number: 09103550
WSM
(No reviews yet) Write a Review
SKU:
09103550
UPC:
865369357130
MPN:
50-311-04K
Condition:
New
Availability:
Ships Same Business Day
Weight:
1.41 LBS
view larger
$125.82
Prop 65 Warning Prop 65 Warning cancer & reproductive harm Price Match Call for more info on price match does not include 3rd party ads

Description

If you're rebuilding a Polaris 500 engine, piston quality directly impacts reliability, power output, and engine longevity. The WSM Piston Kit delivers OEM-equivalent construction with measurable performance upgrades—specifically, the MOS2 coating on the skirts reduces friction and heat while drawing thermal energy away from critical ring groove areas. This means more consistent power delivery, longer component life, and the precision fit your engine demands.

Built for serious riders and mechanics who refuse to compromise on engine internals, this kit gives you everything needed for a complete piston replacement per cylinder.

  • +.25 mm oversized
  • Piston, rings, pin, clips included
  • MOS2-coated skirts
  • Heat-dissipating design
  • Hardened ring grooves
  • Improved E-clip design
  • Meets/exceeds OEM specs
  • One kit per cylinder
  • Additional rings available separately
  • MPN: 50-311-04K
View AllClose

Specs

BORE - OVERSIZE METRIC:
+0.25 MM
BORE SIZE METRIC:
92.25 MM
PRODUCT NAME:
PISTON KIT
PISTON MATERIAL:
ALUMINUM
UNITS:
KIT
BORE - OVERSIZE:
+0,25 MM
MODEL:
ORIGINAL
RIDING STYLE:
ATV
View AllClose

0 Reviews

View AllClose

Fitment

Fitment for WSM Piston Kit - Polaris 500 - +.25 mm 50-311-04K

View AllClose

FREE Shipping on orders of $99 or more!

Commercial Accounts

We offer tax-free commercial accounts, providing businesses with significant savings and streamlined benefits.

Details

Easy 30-Day Returns

We proudly offer 30-day easy returns, ensuring a hassle-free and convenient shopping experience for our customers.

Details

You May Also Like

Related Products

Related Products

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER

Privacy Policy | Terms of Use | Site Accessibility