Universal Parts 12mm axle adjuster set, SKU 103-32, pair of zinc-plated chain tensioners with M6 rod and lock nuts. Rzor MX500 MX650, Pocket Bikes, and other applications Universal Parts 12mm axle adjuster set, SKU 103-32, pair of zinc-plated chain tensioners with M6 rod and lock nuts. Rzor MX500 MX650, Pocket Bikes, and other applications
Universal Parts 12mm axle adjuster set, SKU 103-32, pair of zinc-plated chain tensioners with M6 rod and lock nuts. Rzor MX500 MX650, Pocket Bikes, and other applications

Universal Parts

Universal Parts 12mm Axle Adjuster Set - Mini & Pocket Bike

SKU 103-32
$5.00
Shipping calculated at checkout.
Description

This Universal Parts 12mm Axle Adjuster Set (SKU 103-32, MPN 4948) keeps your drive chain properly tensioned and your rear wheel centered in the swingarm. Sold as a left and right pair with washers and lock nuts, these zinc-plated steel adjusters are a heavy-duty upgrade over the thin factory tensioners on many mini bikes, pocket bikes, and pit bikes. The fine M6 x 1.0 thread gives precise, repeatable adjustment, so you can turn each side the same amount and keep the axle square.

Key Features

  • Zinc-plated steel: Resists corrosion so the threads stay smooth after mud and rain.
  • 12.4mm bore: Slides over standard 12mm axles without binding.
  • Fine-pitch thread: M6 x 1.0 rod for precise, repeatable chain tension.
  • Complete hardware: Washers and lock nuts included so settings will not vibrate loose.
  • Left and right pair: Sold as a set of 2.

Technical Specifications

  • Part number: 103-32
  • MPN: 4948
  • Axle size: 12mm
  • Inner diameter: 12.4mm
  • Overall length: 68.4mm
  • Thread: M6 x 1.0
  • Finish: Zinc-plated steel
  • Quantity: Set of 2 (left and right)
  • Brand: Universal Parts

Compatibility

Vehicle Type Compatible Models
Mini Bikes Mega Moto 80/105, MotoVox MBX10, Monster Moto 80cc, Coleman CT100U
Pocket Bikes 47cc/49cc MTA1 (Cagliari), MTA2, Lucky 7 Series
Dirt / Pit Bikes Coolster, Roketa, TaoTao 70cc-125cc models with 12mm axles
Electric Razor MX500/MX650 rear axle and similar e-moto platforms

 

Measure your rear axle before ordering. These adjusters fit 12mm axles only, with a 68.4mm overall length and M6 x 1.0 thread.

Installation Notes

Aim for 15-20mm of vertical play at the center of the chain. Turn each adjuster an equal number of turns to keep the rear wheel centered in the swingarm, then tighten the lock nuts.
Product Diagrams
Features
  • Zinc-plated steel for corrosion resistance
  • 12.4mm ID - smooth fit over 12mm axles
  • M6x1.0 fine-pitch thread for precise adjustment
  • Includes washers and lock nuts
  • Sold as a set of 2 (left and right)
Specifications

Part Number: 103-32 | MPN: 4948 | Axle: 12mm | ID: 12.4mm | Length: 68.4mm | Thread: M6 x 1.0 | Finish: Zinc-plated steel | Qty: Set of 2 | Brand: Universal Parts
Model Fitments

Mini bikes: Mega Moto 80/105, MotoVox MBX10, Monster Moto 80cc, Coleman CT100U; Pocket bikes: MTA1/MTA2/Lucky 7 47-49cc; Pit bikes: Coolster/Roketa/TaoTao 70-125cc (12mm axle); Razor MX500/MX650
  • 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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