--- product_id: 246618258 title: "5/16\" x 9 Ball bicycle brearings for crank" brand: "jaceyon" price: "$21.46" currency: USD in_stock: true category: "Jaceyon" url: https://www.desertcart.us/products/246618258-5-16-x-9-ball-bicycle-brearings-for-crank store_origin: US region: United States of America --- # Fits MTB & multiple bike types Precision 5/16" ball diameter Durable steel construction 5/16" x 9 Ball bicycle brearings for crank **Brand:** jaceyon **Price:** $21.46 **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your ride with precision-engineered power! ## Quick Answers - **What is this?** 5/16" x 9 Ball bicycle brearings for crank by jaceyon - **How much does it cost?** $21.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/246618258-5-16-x-9-ball-bicycle-brearings-for-crank) ## Best For - jaceyon enthusiasts ## Why This Product - Trusted jaceyon brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Risk-Free Upgrade:** Backed by responsive 24-hour customer support and satisfaction guarantee for worry-free purchase. - • **Smooth Ride Guaranteed:** 9-ball retainer design reduces friction for effortless pedaling and enhanced control. - • **Universal MTB & Beyond:** Designed to replace crank bearings on mountain, adult, lowrider, and stretch bikes alike. - • **Engineered for Endurance:** High-intensity steel balls and retainer deliver long-lasting durability under rugged MTB conditions. - • **Precision Fit for Peak Performance:** Exact 1.74" outer & 1.28" inner diameters ensure seamless crank compatibility. ## Overview The Jaceyon Bike Ball Bearing Retainer is a high-quality steel replacement part designed for mountain bike crank bottom brackets. Featuring a precise 5/16" ball diameter and a 9-ball retainer system, it ensures smooth, durable performance across various bicycle types. Trusted by thousands with a 4.5-star rating, this compact 4-piece set offers a reliable, easy-to-install upgrade for serious cyclists seeking enhanced ride efficiency. ## Description desertcart.com : Jaceyon Bike-Ball-Bearing-Retainer, Bicycle-Ball-Bearings, 5/16" x 9-Balls-Bike-Crank - 4 Pcs Replacement Mountain Bike Parts Repair Accessories for MTB Bicycle Crank Bottom Bracket : Sports & Outdoors ## Features - 【Dimensions and specifications】:OUTER DIAMETER: 1.74 inch/44.5, INNER DIAMETER: 1.28 inch/32.5mm, BALL DIAMETER: 5/16 inch. Please confirm whether this size is suitable for your bicycle before you buy them!!!!!!!!!!!!!! - 【Application:】: This kind of ball bearing stainless steel ball inlaid in the retainer design,It is a bicycle parts, it's suitable for replacing the crank bearing of the bicycle. - 【Material】: This ball bearing retainer made of steel, high quality, durable and high intensity. - 【Widely usage】: This beads rack for bike parts replacement, suitable for ordinary bicycles, mountain bikes, adult bicycle, lowrider bikes, stretch bicycles. - 【Satisfaction guarantee】: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08MFGW17R | | Best Sellers Rank | #48,964 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Bike Bottom Brackets | | Brand Name | Jaceyon | | Customer Reviews | 4.5 4.5 out of 5 stars (314) | | Date First Available | November 2, 2020 | | Item Dimensions LxWxH | 1.75 x 1.75 x 0.34 inches | | Item Package Dimensions L x W x H | 5.67 x 4.61 x 0.67 inches | | Item Weight | 100 g | | Manufacturer | Jaceyon | | Material | steel | | Outer Material | steel | | Package Weight | 0.1 kg | | Part Number | J-ZJ2020001 | ## Images ![5/16" x 9 Ball bicycle brearings for crank - Image 1](https://m.media-amazon.com/images/I/71ddwG3oeML.jpg) ![5/16" x 9 Ball bicycle brearings for crank - Image 2](https://m.media-amazon.com/images/I/71N+H4-OXyL.jpg) ![5/16" x 9 Ball bicycle brearings for crank - Image 3](https://m.media-amazon.com/images/I/71i5NqnB3SL.jpg) ![5/16" x 9 Ball bicycle brearings for crank - Image 4](https://m.media-amazon.com/images/I/61swlyVO3xL.jpg) ![5/16" x 9 Ball bicycle brearings for crank - Image 5](https://m.media-amazon.com/images/I/71b+F86i5rL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/246618258-5-16-x-9-ball-bicycle-brearings-for-crank](https://www.desertcart.us/products/246618258-5-16-x-9-ball-bicycle-brearings-for-crank) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-28*