Prima ROLL18X12 9G roller weights for Genuine Stella Automatic, six 18x12mm rollers in labeled 9g retail packaging Prima ROLL18X12 9G roller weights for Genuine Stella Automatic, six 18x12mm rollers in labeled 9g retail packaging
Prima ROLL18X12 9G roller weights for Genuine Stella Automatic, six 18x12mm rollers in labeled 9g retail packaging

Prima

Prima 18x12mm Roller Weights - Stella Automatic

SKU ROLL18X12 9G
$11.00
Shipping calculated at checkout.
Options: 9G
Description

This Prima 18 × 12 mm variator roller-weight set lets you refresh or tune the CVT response of your Genuine Stella Automatic. Each set contains six rollers in your selected weight, with 8 g, 9 g and 10 g options to help match the variator setup to your riding preferences. Choose lighter or heavier rollers to adjust the transmission's operating character rather than settling for worn weights.

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

Key Features

  • Six-piece set: Includes six matching roller weights in the selected weight option.
  • CVT tuning choices: Available in 8 g, 9 g and 10 g weights per roller.
  • 18 × 12 mm size: 18 mm diameter and 12 mm width for compatible variators.
  • Prima aftermarket replacement: For Genuine Stella Automatic and other CVT applications using this roller size.
  • Made in Taiwan: Prima scooter-parts construction.

Technical Specifications

  • Brand: Prima.
  • Part type: Variator roller weights.
  • Diameter: 18 mm.
  • Width: 12 mm.
  • Weight options: 8 g, 9 g or 10 g per roller.
  • Quantity: Six rollers per set.
  • Part numbers: ROLL18X12 8G; ROLL18X12 9G; ROLL18X12 10G.
  • Country of origin: Taiwan.

Compatibility

Application Fit requirements
Genuine Stella Automatic 125 Compatible variator using 18 × 12 mm rollers
Other CVT scooters Variator must use 18 × 12 mm rollers; select an appropriate roller weight for the setup

 

Lighter rollers generally allow higher engine RPM before upshifting; heavier rollers generally encourage earlier upshifting. The best weight depends on the engine and transmission setup. Confirm roller dimensions before ordering, and replace the complete set together.
Product Diagrams
Features
  • Six matching roller weights per set
  • 18 mm diameter x 12 mm width
  • 8 g, 9 g or 10 g per-roller options
  • Prima aftermarket CVT replacement and tuning parts
  • Made in Taiwan
Specifications

Brand: Prima; Type: variator roller weights; Dimensions: 18 mm diameter x 12 mm width; Options: 8 g, 9 g, 10 g per roller; Quantity: six per set; SKUs: ROLL18X12 8G, ROLL18X12 9G, ROLL18X12 10G; Origin: Taiwan
Model Fitments

Genuine Stella Automatic 125; other CVT scooters with variators using 18 x 12 mm roller weights. Confirm dimensions and appropriate weight for the transmission setup.
  • 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.
Options: 9G
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