Dr. Pulley 15x12mm Sliding Roller Weights - Minarelli 50cc

$25.00

Weight per slider (g)

Part number 1200-1100 4.0G

Check dimensions and compatibility before ordering.

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Description

Standard roller weights develop flat spots over time, leading to sluggish acceleration and inconsistent CVT behavior. Dr. Pulley 15x12mm Sliding Weights use a patented wedge-shaped design that slides up and down the variator ramps instead of rolling — eliminating flat-spotting, broadening your effective gear ratio, and improving throttle response in and out of corners. Made from a self-lubricating low-friction polymer. Set of 6. Available in 3.0g–10.0g in 0.5g increments — select your weight above.

Performance Advantages

Patented Sliding Technology (U.S. Patent 7,276,004): Eliminates flat-spotting and abnormal wear common in round weights, extending service life.
Broadened Gear Ratio: Lower effective first gear for explosive takeoffs and a taller overdrive for increased top-end speed.
Enhanced Re-Acceleration: Improved throttle response when exiting corners or navigating traffic.
Self-Lubricating Polymer: Low-friction material reduces heat and variator ramp wear.

Weight Selection Guide

Lighter (3g–5g): Quicker acceleration and better low-end response — best for stop-and-go, heavier riders, or stock setups. Sweet spot for most 50cc Minarelli: 4.5g–6.0g.
Heavier (6.5g–10g): Lower cruising RPM and higher top-end speed — best for lighter riders or open-road builds.
Installation Note: Orientation matters — install with the Dr. Pulley logo and stepped edge positioned per the included diagram.

Features

Patented Sliding Technology — eliminates flat-spotting and abnormal wear common in round roller weights
Broadened Gear Ratio — achieves a lower first gear for explosive takeoffs and a taller overdrive for increased top-end speed
Enhanced Re-Acceleration — dramatically improves throttle response when exiting corners or navigating traffic
Self-Lubricating Material — high-tech, low-friction polymer composition reduces heat and wear on variator ramps
Longer Lifespan — outlasts traditional round roller weights while maintaining consistent CVT variator performance; made in Taiwan by Dr. Pulley since 1987, ISO 9001 certified

Specifications

Weight per slider (g)	4.0G

SKU: 169-216 (base: 1200-1100)
Size: 15mm diameter x 12mm width
Weights: 3.0g, 3.5g, 4.0g, 4.5g, 5.0g, 5.5g, 6.0g, 6.5g, 7.0g, 7.5g, 8.0g, 8.5g, 9.0g, 9.5g, 10.0g
Quantity: Set of 6
Material: Self-lubricating high-tech polymer
Origin: Made in Taiwan, ISO 9001 certified, Dr. Pulley since 1987

Model Fitment

Fits Yamaha-based Minarelli 50cc 2-stroke engines (1PE40QMB, Minarelli Horizontal/Vertical, Yamaha A124E). Does NOT fit Genuine Buddy/RoughHouse models.

Brand	Compatible Models (50cc 2-Stroke)
Yamaha	Jog (1988–2001), Zuma (2002–2011), Vino, C3, Aerox, Axis, Breeze, Neo's
Aprilia	SR 50 (Minarelli engine), Gulliver, Rally, Scarabeo, Sonic
Adly	Fox 50, Hammerhead 50, Noble 50, Thunderbike 50, Panther 50
Malaguti	F10, F12 Phantom, F15 Firefox, Centro, Ciak
Benelli	491 GT/RR, K2, Pepe, Naked 50
CPI / Keeway	Hussar, Popcorn, F-Act, Hurricane, Matrix, RY8
Beta	Ark, Chrono, Quadra, Tempo
Italjet	Dragster 50, Bazooka, Pista, Scoop, Reporter

Supplier product-family reference photos. Select the exact weight or jet size from the options; markings in a reference photo may show a different option.