NCY 26mm Black Front Forks for Yamaha Jog 50 / 139QMB

Ditch your soft, clapped-out stock tubes and transform your front-end tracking with the premium NCY Performance Front Fork Assembly . Engineered specifically for Yamaha Jog architectures and matching 139QMB platform variants, these high-performance stanchions feature sports-tuned internal damping rates that dramatically diminish nose-dive under heavy braking. Finished in a high-gloss midnight black coating, this complete leg set stabilizes your tracking through high-speed turns — ensuring a crisp, confidence-inspiring ride on both street commutes and race setups. Advanced Suspension Features Sports Damping Optimization: Calibrated to deliver a stiffer, more predictable spring and rebound rate than mushy factory originals — providing better tire contact and road feedback. Flawless 26mm Tube Profile: Precision ground to a 26mm outer stanchion diameter, sliding perfectly into compatible stock or aftermarket triple trees. Disc Brake Ready Geometry: Features integrated structural mounting tabs cast directly into the lower leg to support standard hydraulic disc brake calipers. Complete Setup Kit: Ships as a matched pair (left and right legs) and includes two premium stainless steel hose/line clamps for a professional garage install. Comprehensive Fitment & Model Guide These forks are engineered strictly for 10mm front axle pins and front hydraulic disc brake configurations. Please check your exact model below: Make / Manufacturer Model Platform Fitment Engine Type & Exclusions Yamaha Jog 50 (Disc Brake Variant) 50cc 2-Stroke Minarelli (Horizontal/Vertical) Chicago Scooter Co. go / go MAX / Pug 50 / Bella Classic 50 / Nitro Sport 50 50cc / 80cc 4-Stroke (GY6 139QMB Layouts) Eton Beamer 50 / Beamer II / Beamer III 50cc 2-Stroke Air-Cooled Variants Chinese GY6 Generics 139QMA, 139QMB, YN139QMB, JJ1P39QMB, BD1P39QMB Fits wide-ranging 10" and 12" wheeled disc setups CRITICAL FITMENT NOTE: This assembly will NOT work on Yamaha Zuma 50F (4T), Zuma "Prebug" (1989–2001), or Zuma "Bugeye" (2002–2011) 2-stroke models due to completely different axle, steering stem, and brake offset requirements. Technical Specifications Stanchion Tube Outer Diameter: 26mm Axle Diameter Fitment: 10mm Brake Configuration: Disc Brake Only Overall Structural Length: 385mm Clamping Surface to Center-Axle Length: 350mm Finish: High-Gloss Black Protective Coating Country of Origin: Taiwan About NCY NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, Kymco, and GY6/QMB-powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified. Performance upgrades are considered racing parts and are not covered by warranty. SKU: 1000-1373 | Vendor: NCY | Category: Wheels & Suspension / Front Forks California Prop 65 Warning: www.p65warnings.ca.gov