Skip to Main Content
Search Suggestions
View All Results
2026 Honda Grom MSX125
0 0
Menu
Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee
Free Shipping Over $49.99 USA-Based Customer Service Price Match Guarantee

We're sorry but all combinations for this product are currently out of stock.

You can be notified upon their arrival by choosing the options you are interested in and then entering your email in the box below.

Out of Stock
American Prime Manufacturing

American Prime Manufacturing Inc. Transmission Mainshaft Bearing Support

Item: P994053
Customer rating is 4.5 out of 5 stars.
11 Read 11 Reviews Read1 Q&A(Question and Answer) Write a Review

Forget the over-engineered junk; real riders know that nothing beats the raw look of a classic open belt drive. This high-strength 356 T6 aluminum sup… Read More

Current price is $39.34
Rebate Available! View Details
Members get up to $16.97 in total value with this purchase.

Cycle Gear Columbus Change Store
Add To Wish List
Military and First Responder Discount

Product Details

American Prime Manufacturing Inc. Transmission Mainshaft Bearing Support

Forget the over-engineered junk; real riders know that nothing beats the raw look of a classic open belt drive. This high-strength 356 T6 aluminum support replaces that bulky inner primary, giving your transmission the bulletproof reinforcement it needs to handle the heavy-duty spinning weight of your clutch basket. Stop worrying about your mainshaft and start riding like you mean it.

Features:

  • Cast from 356 t6 high strength aluminum
  • Automotive style sealed ball bearing
  • Must use stock mainshaft nut
Product Style J&P Cycles Item # Catalog Number Store Sku MFR. Product # Availability
Product Style American Prime Manufacturing Inc. Transmission Mainshaft Bearing Support J&P Cycles Item #10215643 Catalog Number181-3338 Store Sku312532 MFR. Product #1120-0002 AvailabilityOut of Stock
Fitment Notes & Exceptions
This is a universal fit part; it may or may not fit without modification.
Product Description
Part Numbers
Fitment
11 Customer Reviews for All Models
Customer rating is 4.5 out of 5 stars. 11 total customer reviews 4.5/5
1 Questions & 0 Answers for All Models
Join now & get rewarded!

Get Free 2-Day Shipping and $15 + 5% RPM Cash on this order.

Already enrolled in RPM? Link your existing membership here.
Join Now- Add Riders Preferred Membership to your cart Learn Moreabout Riders Preferred Membership

Reviews & Questions

$39.99/yr.
Spend Less. Ride More.
  • 5% RPM Cash Back*
  • 10% Off Over 70 Brands
  • $15 in RPM Cash When You Join
  • Free 2-Day Shipping & Free Returns*
  • And more!
Become a member today! Learn More
By purchasing and enrolling in Riders Preferred Membership, you agree to the Program Terms and Conditions. *Some exclusions apply: 10% RPM discount applies on full price and sale price Exclusive Brands. 10% RPM discount applies on additional select brands at full price. Exclusions apply. RPM free 2-day shipping applies on qualifying items, contiguous U.S. only. Not available for AK, HI, or U.S. Territories. View shipping policies. RPM free returns apply on qualifying items and are processed on standard return timeline, contiguous U.S. only. View return policy.