RDLN Racing Clutch w/ Adjustable Driven Pulley; 139QMB

    20 in stock

    1200-1275

    $68.00
    $68.00
    Shipping calculated at checkout.
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    Description

    RDLN's Racing Clutch with Adjustable Sheave Driven Pulley kit significantly improves the performance of your 50cc 139QMB GY6 stock clutch, giving you smooth, reliable, and rapid clutch engagement during acceleration.

    Benefits:

    1. Cross-drilled holes and tapered vents on the outer drive face significantly enhance heat dissipation
    2. The clutch shoe comes with reinforced friction plates and 1500rpm clutch springs, ensuring rapid and reliable engagement during acceleration
    3. The adjustable clutch sheave lets you customize the acceleration profile to match your riding style.

    Specifications:

    • Clutch Spring Tension: 1500rpm
    • Clutch Bell Inner Diameter: 107mm
    • Clutch Bell Outer Diameter: 117mm
    • Number of Clutch Bell Splines: 22
    • Clutch Bell Splines Inner Diameter: 11.2mm (peak to peak)
    • Clutch Shoe Inner Diameter (flat side to flat side): 24mm
    • Clutch Shoe Inner Diameter (round side to round side): 28mm
    • Clutch Shoe Overall Outer Diameter: 105mm
    • Clutch Shoe Overall Height: 30mm
    • Clutch Sheave: 118mm

    Compatibility: This product fits 50cc 139QMB engines and those with the following codes. 

    139QMB-based 50cc / 80cc engines with the following engine codes:

    139QMA 139QMB 1P39QMB 1P39QMA-2
    YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB
    BN139QMB 147QMD Other QMA models Other QMB models

    Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.

    About RDLN: RDLN is a premier line of aftermarket performance upgrade systems and components for scooters.  RDLN products are engineered to significantly improve the function, performance, and reliability of your vehicle with the ultimate goal being an optimal balance of price, power, and performance. RDLN’s extensive field-testing network ensures each product exceeds customer requirements and expectations every time.  RDLN delivers full-throttle performance at uncompromised quality.

    Made in Taiwan.

    This product is intended for off-road use only.

    This product is not intended for use on public roads or land.

    This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.

    *Performance upgrades are considered racing parts and are not covered by warranty.

    We Offer:

    30-day returns for peace of mind

    Expert support from scooter specialists

    Flat-rate shipping to the lower 48 states

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    RDLN Racing Clutch w/ Adjustable Driven Pulley; 139QMB

    $68.00

    Why Choose Classic Scooters USA

    • Reliable Shipping

      Orders are carefully packed and shipped with dependable delivery across the contiguous United States. Designed to get your scooter or parts to you safely and on time.

    • Easy Returns

      Our 30-day return policy makes it simple to shop with confidence and peace of mind. If something isn’t right, returns are straightforward and hassle-free.

    • Built Quality

      Every scooter, part, and accessory is selected for durability and long-term performance. Built to handle daily riding and real-world road conditions.

    Orders

    How do I place an order?

    Simply browse our scooters, parts, or accessories, add your desired items to the cart, and proceed to checkout. Follow the prompts to enter your shipping and billing information, then confirm your order.

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    Products

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    We offer a variety of scooters, including classic-styled models, modern gas-powered scooters, and electric scooters. Options range from lightweight 50cc scooters to more powerful 150cc+ models for commuting or longer rides.

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    Yes! Most of our scooters are easy to handle, lightweight, and beginner-friendly. They are designed for smooth rides and safe handling, making them perfect for first-time riders.

    Shipping

    How long will it take for my order to arrive?

    Most orders are processed within 1–2 business days. Standard shipping to the 48 contiguous United States usually takes 3–7 business days, depending on your location and product availability.

    How much does shipping cost?

    We offer flat-rate shipping for orders shipped within the 48 contiguous states. Shipping costs are calculated at checkout and are designed to be simple and affordable.

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