Select Your Ride

1
2
3

HOT RODS Crankshaft Assembly 4138

Part Number: H134
HOT RODS
(No reviews yet) Write a Review
SKU:
H134
MPN:
4138
Condition:
New
Availability:
Ships Same Business Day
Weight:
8.92 LBS
view larger
$464.95
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 building a high-performance long-stroke engine for your ATV, a properly assembled crankshaft is the foundation of reliability and power delivery. The HOT RODS Crankshaft Assembly 4138 arrives factory-assembled and trued to OEM specifications, eliminating the guesswork and machine work typically required for these builds. This complete unit pairs proven connecting rods, top-end bearings, and precision crankshaft webs—giving you a drop-in solution ready for installation without costly fabrication or compatibility issues.

  • Factory-assembled, trued straight
  • Meets/surpasses OEM specs
  • Complete with connecting rods
  • Top-end bearings included
  • Completely rebuildable design
  • Six long-stroke ATV applications
  • TRX400EX compatible
  • KFX/LTZ 400 compatible
  • Banshee compatible
  • Warrior compatible
  • Raptor compatible
  • Special piston options available
  • Minimal machine work needed
  • Main bearings sold separately
  • Seals sold separately
  • Single-cylinder application
  • Bolt-on ready installation
View AllClose

Specs

COLOR/FINISH:
STEEL
MATERIAL:
4140 STEEL
UNITS:
ASSEMBLY
RIDING STYLE:
OFF-ROAD
STROKE LENGTH METRIC:
49.80 MM
DISPLACEMENT:
250 CC
MODEL:
2-CYCLE
PRODUCT NAME:
CRANKSHAFT ASSEMBLY
FEATURES:
STANDARD CRANKSHAFT
TYPE:
OEM STROKE
View AllClose

0 Reviews

View AllClose

Fitment

Fitment for HOT RODS Crankshaft Assembly 4138

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

HOT RODS Crankshaft Assembly 4014
Quick view

HOT RODS Crankshaft Assembly 4014

HOT RODS

$305.95
If you're building a long-stroke engine for your ATV, the HOT RODS Crankshaft Assembly 4014 delivers the durability and precision you need without the machine work. This complete, factory-assembled...
H117
Add to Cart
HOT RODS Crankshaft Assembly 4415
Quick view

HOT RODS Crankshaft Assembly 4415

HOT RODS

$436.95
If you're building a high-performance ATV engine or planning a long-stroke conversion, a quality crankshaft assembly is non-negotiable—it's the foundation that translates power reliably to the track...
09210512
Add to Cart

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