2Bros Parts

SMALL END 16x20x23 BEARING, PROX 21.4504 MADE IN JAPAN

£13.93Only 1 left

4.1 Trustpilot 99.9% positive on eBay

UK delivery £4.99, free over £60 2–4 business days

Spread the cost with Klarna 18+, T&Cs apply

1

Small end bearing 16x20x23 with 12 rollers. Manufactured by leading Japanese OEM factories to exact OEM specifications. Designed as a direct and cost efficient OEM replacement. Full line available from stock for Dirtbike, ATV, PWC and 50cc/scooter. Made in Japan. ProX 21.4504.

Specifications
SKU
56-6372.PROX
Brand
Pro-X Racing
Availability
In Stock (1)

Fitments (31)

MakeModelYear
KAWASAKIJS (JS) 4401976
KAWASAKIJS (JS) 4401977
KAWASAKIJS (JS) 4401978
KAWASAKIJS (JS) 4401979
KAWASAKIJS (JS) 4401980
KAWASAKIJS (JS) 4401981
KAWASAKIJS (JS) 4401982
KAWASAKIJS (JS) 4401983
KAWASAKIJS (JS) 4401984
KAWASAKIJS (JS) 4401985
KAWASAKIJS (JS) 4401986
KAWASAKIJS (JS) 4401987
KAWASAKIJS (JS) 4401988
KAWASAKIJS (JS) 4401989
KAWASAKIJS (JS) 4401990
KAWASAKIJS (JS) 4401991
KAWASAKIJS (JS) 4401992
KAWASAKIJS (JS) 5501982
KAWASAKIJS (JS) 5501983
KAWASAKIJS (JS) 5501984
KAWASAKIJS (JS) 5501985
KAWASAKIJS (JS) 5501986
KAWASAKIJS (JS) 5501987
KAWASAKIJS (JS) 5501988
KAWASAKISX JS 5501989
KAWASAKISX JS 5501990
KAWASAKISX JS 5501991
KAWASAKISX JS 5501992
KAWASAKISX JS 5501993
KAWASAKISX JS 5501994
KAWASAKISX JS 5501995
General Product Group
Crankshafts & Parts
General Product Type
Small End Bearing
Variant Id
251358
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

ProX Small End Bearing 16x20x23 - Precision Engineered in Japan

This ProX Small End Bearing, part number 21.4504, is a high-quality replacement component designed for piston pins. Manufactured by leading Japanese OEM factories, it offers a direct and cost-effective alternative to original equipment.

Engineered to meet exact OEM specifications, this bearing ensures a precise fit and reliable performance. It is an ideal choice for maintaining the integrity and functionality of your motorcycle, ATV, PWC, or scooter engine.

Key Features:

  • Dimensions: 16mm (inner diameter) x 20mm (outer diameter) x 23mm (width).
  • Construction: Features 12 durable rollers for smooth operation and reduced friction.
  • Origin: Proudly made in Japan, ensuring superior quality and craftsmanship.
  • Application: Suitable for a wide range of dirt bikes, ATVs, PWCs, and 50cc scooters.
  • OEM Replacement: Designed as a direct, cost-efficient replacement for original piston pin bearings.
  • Brand: Manufactured by ProX Racing, a trusted name in performance engine components.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

More answers in our FAQ.

Trade pricing available

Buying parts for your business? Apply for a 2BrosParts trade account.

Apply for Trade
1