Optimize your scooter's performance with the Polini 16x13 Roller Weight Tuning Kit, which lets you test different weight options before choosing a permanent set. Try lighter weights for a higher-revving launch and hill pull, or heavier ones for a lower-revving cruising feel; the result depends on your complete variator setup.
Features
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Four Weight Options in One Kit: Includes 4.5g, 5g, 5.5g, and 6g rollers — covering the full tuning range for most 50cc CVT setups.
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Complete Set Per Weight: Each weight size includes 6 brass center weights that pair with the outer roller, giving you a full replacement set to test each configuration properly.
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16 x 13 mm Roller Dimensions: Precision-matched to factory variator roller pockets on compatible 50cc engines.
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Polini Quality: Manufactured by Polini, a trusted Italian performance brand with decades of two-wheel motorsport engineering.
Specifications
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Roller Dimensions: 16 x 13mm
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Weight Options: 4.5g, 5g, 5.5g, 6g
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Quantity: 12 shells + 24 internal weights (6 weights per set)
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Application: CVT Variator Tuning
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SKU: 146-46
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Brand: Polini
Vehicle Compatibility
For the listed scooters when equipped with a variator that uses 16x13mm rollers. Check the size of your existing rollers before ordering.
| Make / Model |
Notes |
| Honda Metropolitan CHF50/P |
2002–2009 (CHF50) |
| Honda Ruckus NPS50 |
All years |
| Honda Elite 50 |
1994–2001 |
| Kymco ZX50 / Agility 50 |
All years |
| SYM DD50 |
All years |
| Chinese 139QMB / GY6 49cc & 50cc |
Most makes and models; check roller size |
NOTE: Tuning Use Only: These kits are designed for performance testing and tuning — not intended as permanent replacements. Once you have identified your perfect weight, replace with a permanent set of roller weights.
Model Fitment
Honda Metropolitan CHF50/P 2002–2009; Honda Ruckus NPS50; Honda Elite 50 1994–2001; Kymco ZX50 and Agility 50; SYM DD50; Chinese 139QMB/GY6 49cc–50cc scooters. Check that the installed variator uses 16x13mm rollers.
