Universal Parts 11-tooth Double-D motor sprocket for #25/#25H chain. Fits Razor E300, MX350, MY1016/1020 motors & Boreem choppers. Part #127-7. Universal Parts 11-tooth Double-D motor sprocket for #25/#25H chain. Fits Razor E300, MX350, MY1016/1020 motors & Boreem choppers. Part #127-7.
Universal Parts 11-tooth Double-D motor sprocket for #25/#25H chain. Fits Razor E300, MX350, MY1016/1020 motors & Boreem choppers. Part #127-7.

Universal Parts

Universal Parts 11-Tooth Motor Sprocket - Razor MX350/MX400

SKU 127-7
$8.00
Shipping calculated at checkout.
Description

Get your electric scooter or mini-chopper back in motion with the Universal Parts 11-Tooth Front Motor Sprocket. Designed for MY1016/MY1020-style small electric motors, this sprocket features a "Double-D" bore with two flat sides for a non-slip, keyed fit on the motor shaft. Precision-cut teeth ensure smooth #25 chain engagement and quiet, reliable power transfer.

Key Features

  • Double-D Bore: Two flat sides (8.6mm apart) lock onto the motor shaft, preventing free-spinning under load.
  • 11-Tooth Torque Profile: Ideal balance of low-end take-off torque and consistent top speed for small electric vehicles.
  • #25 / #25H Chain Compatible: Fits the most common drive chain size used in electric powersports.
  • Heat-Treated Steel: Resists tooth hooking and wear even with frequent stop-and-go use.

Technical Specifications

  • Tooth Count: 11
  • Outer Diameter: 25.5mm
  • Inner Diameter (flat to flat): 8.6mm
  • Inner Diameter (round to round): 10mm
  • Chain Size: #25 / #25H
  • Part Number: 127-7

Compatibility

Universal fit for 24V, 36V, and 48V electric motors (200W–500W) with Double-D shafts:

Vehicle Type Common Models
Razor Scooters E300, Pocket Mod, Ground Force Go-Kart
Razor Dirt Bikes MX350, MX400 (verify shaft shape)
Electric Mini-Choppers Generic 250W–350W Boreem-style choppers
Motors MY1016, MY1018, MY1020 (8.6mm flat shafts)

 
Product Diagrams
Features
  • Double-D Bore (8.6mm Flat-to-Flat) — Non-Slip Keyed Fit on MY1016/MY1020-Style Motor Shafts
  • 11 Teeth — Balanced Low-End Torque and Top Speed for Small Electric Vehicles
  • #25 / #25H Chain Compatible — Most Common Drive Chain in Electric Powersports
  • Heat-Treated Steel — Resists Tooth Hooking and Wear Under Stop-and-Go Use
  • Fits 24V, 36V, and 48V Motors (200W–500W) with Double-D Shafts
Specifications

SKU: 127-7 | Teeth: 11 | Outer diameter: 25.5mm | Bore flat-to-flat: 8.6mm | Bore round-to-round: 10mm | Chain: #25 / #25H | Bore type: Double-D | Compatible motors: MY1016, MY1018, MY1020
Model Fitments

Razor E300 | Razor Pocket Mod | Razor Ground Force Go-Kart | Razor MX350 | Razor MX400 (verify shaft shape) | MY1016, MY1018, MY1020 motors (8.6mm Double-D shaft) | Generic 250W-350W Boreem-style electric mini-choppers
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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