--- product_id: 18276137 title: "15x12 Sliding Roller Weights 4.5 Gram" brand: "dr. pulley" price: "S/.212" currency: PEN in_stock: true reviews_count: 4 url: https://www.desertcart.pe/products/18276137-15x12-sliding-roller-weights-4-5-gram store_origin: PE region: Peru --- # Fits Minarelli & Yamaha scooters Precision 15x12mm size Optimizes gear ratio dynamically 15x12 Sliding Roller Weights 4.5 Gram **Brand:** dr. pulley **Price:** S/.212 **Availability:** ✅ In Stock ## Summary > ⚡ Unlock your scooter’s hidden speed potential with Dr. Pulley Sliding Roller Weights! ## Quick Answers - **What is this?** 15x12 Sliding Roller Weights 4.5 Gram by dr. pulley - **How much does it cost?** S/.212 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/18276137-15x12-sliding-roller-weights-4-5-gram) ## Best For - dr. pulley enthusiasts ## Why This Product - Trusted dr. pulley brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight Yet Durable:** Crafted from Black Pearl material for optimal balance and longevity. - • **Dynamic Gear Ratio Mastery:** Sliding roller design fine-tunes acceleration and top speed on the fly. - • **Customizable Weight Options:** Choose from multiple precise weights (4.5g to 10.5g) to tailor your ride’s responsiveness. - • **Universal Scooter Compatibility:** Seamlessly fits Minarelli 50cc 2-stroke and popular Yamaha models like Zuma & Vino. - • **Self-Adjusting Wear Compensation:** Automatically adapts to wear, maintaining peak performance without manual tweaks. ## Overview Dr. Pulley 15x12 Sliding Roller Weights are engineered for Minarelli 50cc 2-stroke engines and compatible Yamaha scooters, featuring a unique sliding mechanism that dynamically adjusts gear ratios and compensates for wear. Available in multiple precise weights and crafted from durable Black Pearl material, these weights enhance acceleration, top speed, and overall ride performance. ## Description Dr. Pulley 15x12 Sliding Roller Weights for Minarelli 50cc 2-stroke engines. Please select weight from drop-down menu. These weights also fit many scooters from fits and compatible with Yamaha including Zuma CW50, Zuma 50F, Vino and C3. Select weight sizes now available in Black Pearl material: 5g. Select Weights on Sale: 8.5g, 9.5g, 10.5g. Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the innovative Dr. Pulley Sliding Roller Weights slide up-and-down the ramp to change the gear ratio. This unique sliding movement (not rolling) provides exclusive advantages to increase CVT performance. With Dr. Pulley, no abnormal wear will occur even when running in high gear. Dr. Pulley's U.S. Patent Number 7,276,004 states that their sliding roller weights eliminate abnormal wear, prevent reduction gear ratio deterioration, prolong the useful life of the transmission, and have the availability to adjust reduction gear ratios as well as driving performance. At the same time, Dr. Pulley Sliding Roller Weights are also adapted to compensate wear automatically, to adjust by itself to move further outward in a movable drive pulley half and to make the vehicle reach a higher maximum vehicle speed. Please see our Warranty & Returns Policy. ## Features - Dr. Pulley 15x12 Sliding Roller Weights for Minarelli 50cc 2-stroke engines. Please select weight from drop-down menu. These weights also fit many scooters from fits and compatible with Yamaha including Zuma CW50, Zuma 50F, Vino and C3. Select weight sizes now available in Black Pearl material: 5g. Select Weights on Sale: 8.5g, 9.5g, 10.5g. Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the inno - djust reduction gear ratios as well as driving performance. At the same time, Dr. Pulley Sliding Roller Weights are also adapted to compensate wear automatically, to adjust by itself to move further outward in a movable drive pulley half and to make the vehicle reach a higher maximum vehicle speed. Please see our Warranty & Returns Policy. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Dr. Pulley | | Brand | Dr. Pulley | | Item Weight | 0.798 ounces | | Package Dimensions | 3 x 2.9 x 1.1 inches | | Is Discontinued By Manufacturer | No | | Manufacturer Part Number | 169-216-4.5g | ## Images ![15x12 Sliding Roller Weights 4.5 Gram - Image 1](https://m.media-amazon.com/images/I/31oR07eUuLL.jpg) ![15x12 Sliding Roller Weights 4.5 Gram - Image 2](https://m.media-amazon.com/images/I/31Tg-4Hs0oL.jpg) ## Questions & Answers **Q: Which one for a 2003 yahama zuma 49cc?** A: These will work great or try the 5gram. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Instant Improvement *by J***. on June 2, 2024* Put these in my 2008 Yamaha C3, and it was a very easy installation all things considered and it's a noticable improvement, nothing crazy of course but definitely improves acceleration and top seed ### ⭐⭐⭐⭐⭐ These are a plus. *by B***S on February 4, 2018* These are great. I gained 5 mph from these in my stock variator on my 2009 Honda metropolitan. Definitely worth it and easy to install of you got the right tools. ### ⭐⭐⭐⭐⭐ Excellent, highly recommended! Make sure you clean your variator thoroughly first. *by Z***K on September 22, 2015* Stellar performance on my Yamaha C3! 10/10 would do again. The cheapo, no-name rollers were garbage in comparison. Don't waste your money. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/18276137-15x12-sliding-roller-weights-4-5-gram](https://www.desertcart.pe/products/18276137-15x12-sliding-roller-weights-4-5-gram) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-05-09*