SM PRO ULTRA BEE WHEEL SET 21/18 - STANDARD PURPLE/PURPLE COMBO

5.0 (1 customer reviews)

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SKU: SR-SM-PRO-ULT-5137

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Brand: Surron

$741.97

SUR RON ULTRA BEE WHEEL SET 19×1.40 / 21×1.60

In Stock

Performance Highlights

Motor Output: 21 kW Peak Power PMSM Mid-Drive

Battery Spec: 74V 55Ah High-Output Pack

Product Overview

SUR RON ULTRA BEE WHEEL SET 19×1.40 / 21×1.60
PURPLE HUB
BLACK RIM
BLACK SPOKES
PURPLE NIPPLES

Technical Specifications

Brand	Surron
SKU Identifier	SR-SM-PRO-ULT-5137
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

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Customer Reviews

David

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