Feature: 1. High Quality Heat Dissipating Variator Replacement for GY6 50 139QMB Based Engine, replacement for Kinroad, replacement for Twister Hammerhead, replacement for Carter and much more . 2. Copper Core Roller: The roller shell is made of high quality nylon material with excellent high temperature and wear resistant, Try Using (3x 5G and 3x of 7g) put in in every other slot, will bring you balanced performance. 3. Red Variator Slides: The racing variator slides has been already installed, comes with red color and made of the same nylon as the roller weights, abrasion resistant and have a long life. 4. Heat Sinking Variator Face: Specially designed for better operation and heat dissipation; the roller grooves design can improve the acceleration time and prevent too much loss on the engine value. 5. Hardening Ramp Plate: The variator ramp plate adopts surface hardening treatment which can make your variator support more power. And the main metal parts have been processed by anti rust treatment for maximum durability. 6. The variator guide slides are made for longevity. 7. HEAT KiLLS BELTS Keep system clean and make shore proper air flow :) Blow out the garbage it helps Specification: Variator Outer Diameter:89mm Variator Inner Diameter:20mm Bush Size: O/D:20MM; I/D:14mm; Length:38mm Roller Weight Size: 16x13 mm Item Type: Racing Variator Kit Material: Copper + Nylon + Aluminium Alloy Fitment: Replacement for GY6 50 139QMB Based Engine, it is a horizontal single cylinder, four stroke, forced air cooled engine has a CTV automatic transmission and is used on many Chinese scooters, ATVs, go karts and mopeds. Also named replacement for GY6 80 139QMA 1P39QMB 1P39QMA as well as 147QMD. Replacement for Blade Replacement for Kinroad Replacement for Twister Hammerhead Replacement for Carter Replacement for Dazon Replacement for Roketa Replacement for DUNE Replacement for Baja Replacement for KPX, Replacement for SUNL Replacement for Avanti Replacement for Bam X Replacement for Baotian Replacement for Bashan Replacement for BMS Replacement for BMX Replacement for Boreem Replacement for Eagle Replacement for CF Moto Replacement for Cross Runner Replacement for Cool Sports Replacement for Diamo Replacement for E Ton Replacement for Eagle Replacement for Fushin Replacement for Fly Replacement for GMI Replacement for Hensim Replacement for Hi-bird Replacement for Baja Replacement for Ice Bear Replacement for Jackel Replacement for Jet Moto Replacement for JCL Replacement for Taotao Replacement for Peace Replacement for JM Star Replacement for Jonway Replacement for Kazuma Replacement for Keeway Replacement for KMD Replacement for Kymco Replacement for Lance Replacement for Lifan Replacement for Linhai Replacement for Loncin Replacement for Longbo Replacement for Fuxin Replacement for Maxtrade Replacement for MDI Replacement for Meitien Replacement for Motofino Replacement for Motorino Replacement for NST Replacement for Panterra Replacement for Panther Replacement for Qlink Yiben Replacement for Red Streak Replacement for Redcat Replacement for Roketa Replacement for Schwinn Replacement for Seaseng Replacement for Strada Replacement for SYM Replacement for Tank Replacement for Terminator Replacement for Tomberlin Replacement for TNG Replacement for United Motors Replacement for Verui Replacement for Wildfire Replacement for X-Treme Replacement for Yamati Replacement for ZNEN Replacement for Geely Replacement for Wangye and etc. Package List: 2 x Cover 1 x Sleeve 9 x Rollers. (3x 5gram) (3x 7gram) (3x 9gram) 3x Clutch Spring rated at 2,000rpm