Naraku variator control shim kit – 30 polished steel annular shims in 0.1mm, 0.2mm, and 0.5mm thicknesses for 20mm variator boss adjustment on QMB139 and 50cc scooter engines Naraku variator control shim kit – 30 polished steel annular shims in 0.1mm, 0.2mm, and 0.5mm thicknesses for 20mm variator boss adjustment on QMB139 and 50cc scooter engines
Naraku variator control shim kit – 30 polished steel annular shims in 0.1mm, 0.2mm, and 0.5mm thicknesses for 20mm variator boss adjustment on QMB139 and 50cc scooter engines

Naraku

Naraku Variator Control Shims – 20mm Boss, 30-Piece

SKU 137-25
$7.00
Shipping calculated at checkout.
Description

Fine-tune your variator’s belt travel with the Naraku Variator Control Shim Kit. Installed between the drive faces, these precision steel shims lengthen the variator boss to allow full belt travel when your variator doesn’t open completely — a common issue when mixing variator components or running an aftermarket setup. Kit includes 30 shims total: 10 each of three thicknesses for precise stack-up adjustment.

For use with 20mm variator bosses only.

This product is intended for off-road use only. This product is not intended for use on public roads or land.

Features

  • Precision steel shims for variator boss length adjustment
  • Allows full belt travel when variator does not open completely
  • 30-piece kit: 10 each of 0.1mm, 0.2mm, and 0.5mm shims
  • For use with 20mm variator bosses only
  • Fits stock and aftermarket variators on a wide range of 50cc platforms

Specifications

  • Boss diameter: 20mm
  • Shim thicknesses: 0.1mm, 0.2mm, 0.5mm
  • Quantity: 30 pieces (10 of each size)
  • Material: Steel
  • Brand: Naraku

Compatibility

Make Model / Engine Notes
Generic / Chinese QMB139 (GY50) 50cc / 49cc Stock and aftermarket variators with 20mm boss
Honda Ruckus (NPS50), Metropolitan, Elite SA50, Elite SR50 2-stroke Elite SA/SR; stock variator
Kymco ZX50, Super 8, Super 9 Stock variator with 20mm boss
SYM DD50 Stock variator with 20mm boss

 
Product Diagrams
Features
  • Precision steel shims for variator boss length adjustment
  • Allows full belt travel when variator does not open completely
  • 30-piece kit: 10 each of 0.1mm, 0.2mm, and 0.5mm shims
  • For use with 20mm variator bosses only
  • Fits stock and aftermarket variators on a wide range of 50cc platforms
Specifications

Boss diameter: 20mm | Shim sizes: 0.1mm, 0.2mm, 0.5mm | Qty: 30 pieces (10 of each) | Material: Steel | Brand: Naraku
Model Fitments

MakeModel / EngineNotes
Generic / ChineseQMB139 (GY50) 50cc / 49ccStock and aftermarket variators with 20mm boss
HondaRuckus (NPS50), Metropolitan, Elite SA50, Elite SR502-stroke Elite SA/SR; stock variator
KymcoZX50, Super 8, Super 9Stock variator with 20mm boss
SYMDD50Stock variator with 20mm boss
  • 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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