Full-E Charged Rear Sprocket 520-54T for Ultra Bee

5.0 (1 customer reviews)

•

SKU: SR-FULL-E-CHA-9027

•

Brand: Surron

$39.04

Full-E Charged Rear Sprocket 520-54T for Ultra Bee

In Stock

Performance Highlights

Motor Output: 21 kW Peak Power PMSM Mid-Drive

Battery Spec: 74V 55Ah High-Output Pack

Product Overview

Full-E Charged Rear Sprocket 520-54T for Ultra Bee
Looking for a simple yet poweful upgrade that lets you fine-tune your ride to match your unique style. Whether you prefer quicker acceleration with a smaller front sprocket and/or a larger rear sprocket, or aim for higher top speeds with the opposite setup, our selection of sprockets has you covered.
Choose from sprocket sizes ranging from 44T to 60T, providing you with a variety of options to customize your ride. Additionally, our sprockets come in eight vibrant colors, allowing you to make a bold statement while optimizing your bikes performance.

Technical Specifications

Brand	Surron
SKU Identifier	SR-FULL-E-CHA-9027
Motor Architecture	21 kW Peak Power PMSM Mid-Drive
Battery Pack	74V 55Ah High-Output Pack
Warranty Term	2 Years Limited Warranty

5.0

Based on 1 verified rider reviews

Have you purchased or tested this product? Sign in to share your review.

Customer Reviews

Marcus

Verified Owner

Oct 05, 2026

Smooth throttle modulation and range

Battery holds charge exceptionally well even in sub-zero morning temperatures. Highly recommend this store.

Surron Freight & Warranty Guarantee

Shipping Policies

E-bikes ship with specialized heavy freight ground carriers in custom reinforced double-walled protective cartons. Delivery typically completes in 3–5 business days. Free shipping applies automatically to all orders over $500.

2-Year Limited Warranty

Surron electric bikes carry an extensive 2-year warranty covering frame integrity, motor internals, and electronic controllers against manufacturing defects. Battery packs are guaranteed to retain at least 70% capacity through 500 charge cycles.

Component Synergies