Select Your Ride

1
2
3

Wiseco Piston Kit 1948-1980 Harley-Davidson FLH 3.517in. Bore K1612

Part Number: K1612
WISECO
(No reviews yet) Write a Review
SKU:
K1612
MPN:
K1612
Condition:
New
Availability:
Ships Same Business Day
Weight:
3.44 LBS
$344.95

Ships from Manufacture | Call to Order (231) 767-5055

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 classic Big Twin top end or planning an overbore on your 1948-1980 Harley-Davidson FLH, the Wiseco K1612 piston kit delivers the forged strength and precision fit required for reliable, long-term performance. High-silicon aluminum construction resists thermal stress and deformation, ensuring your rebuild withstands repeated combustion cycles without premature wear. This complete kit eliminates multiple sourcing headaches by bundling everything needed for a professional-grade top-end refresh.

  • Bore diameter: 3.517"
  • Fitment: 1948-1980 FLH
  • Material: High-silicon aluminum
  • Forged piston construction
  • Includes rings, pins, circlips
  • Top-end gasket included
  • Bolt-on installation
  • Cylinder sleeves: Separate purchase
  • MPN: K1612
View AllClose

Specs

BORE SIZE IMPERIAL:
3.517'
DISPLACEMENT:
1263 CC
PISTON MATERIAL:
FORGED
PRODUCT NAME:
REBUILD KIT
BORE - OVERSIZE:
+0,080'
COMPRESSION RATIO IMPERIAL:
9.0:1
BORE OVERSIZE - IMPERIAL:
+0.080'
PISTON MATERIAL:
ALUMINUM ALLOY
RIDING STYLE:
STREET
UNITS:
EACH
STROKE LENGTH IMPERIAL:
3-31/32'
TYPE:
TOP END
View AllClose

0 Reviews

View AllClose

Fitment

Fitment for Wiseco Piston Kit 1948-1980 Harley-Davidson FLH 3.517in. Bore K1612

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.



Easy 30-Day Returns

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


You May Also Like

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