CNC-machined aluminum construction: Provides superior strength and lightweight performance for demanding e-bike applications
Solid one-piece shock brace: Enhances durability and stability during high-power operation
Machined sides with included spacers and hardware: Delivers a finished appearance and ensures easy installation
Exclusive mounting compatibility: Designed specifically for QS165 5kW and 10kW motors, with updated fit for larger tire sizes
Supports up to 29,000 watts: Handles high power output for extended riding performance
Summarized by Shop
Custom designed , CNC machined aluminum swingarm upgrade for the Razor SX500 and MX500/650 made right here in Minnesota.
MOTOR NOT INCLUDED, sold separately. Tired of burning up smaller motors? So were we! This is by far the best motor we have run to date. We are so impressed with this setup. I crammed 17,000 watts in the 5000 watt ver
Material
Aluminum
Compatible Motors
QS165 5kW, QS165 10kW
Maximum Tire Size
12 inches
Mounting Points
MY1020 and FW11 holes (original Surron fitment)
Condition
New
Color
Silver, Black
Summarized by Shop
5.0
36 ratings
5
4
3
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1
I really like how all I had to do was tighten the axle allen bolt and how it was designed to hold the locknut in place making it significantly easier to tighten the rear axle compared to the stock swingarm
D
Dalia · 8 days ago
Future proof
J
Jake · July 28, 2026
This swingarm took my son’s bike to the next level. From the looks to the easy install this is by far my favorite purchase so far. Planning to buy a couple more for my other two kids razor.