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:

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

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