Scooterworks USA, LLC NCY Compression Spring (Performance); 139QMB - Shop

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NCY 16x13mm roller weights, 5g–9g. Fits 139QMB/GY6 50–80cc: Genuine Buddy 50, Honda Ruckus, Yamaha Zuma, TaoTao & more. ISO 9001, made in Taiwan.

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NCY Performance Roller Weights 16x13mm 139QMB & GY6 50-80cc

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NCY 1000 RPM clutch compression (contra) spring for Minarelli 50cc 2T CVT. Fits Yamaha Zuma, Vino, BWS, Jog, Aprilia, CPI & more. SKU 1200-1011.

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NCY 72cc big bore piston-cylinder kit PRCK1 for Minarelli 50cc 2-stroke engines. Fits Genuine Buddy 50, Yamaha Zuma/Jog, RoughHouse 50 & more. 47mm, 10mm pin.

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NCY PTFE-Coated Variator Pulley - 139QMB, Genuine 50cc

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NCY variator slide pieces set of 3 (SKU 1200-1186) for 139QMB 50cc 4-stroke scooters — three black plastic C/U-shaped sliders with notched engagement slots, arranged in a pinwheel pattern

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SSP-G QMB139 performance torque springs — available in 1000, 1500, and 2000 RPM options, 49mm inner diameter

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NCY red billet aluminum kickstart lever for Honda Ruckus and 139QMB scooters

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NCY Billet Aluminum Kickstart Lever | Red Anodized

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NCY 171cc Big Bore Kit - 61mm | No Case-Cut for GY6

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Blue Line Clutch Slider Pin Set of 3; 139QMB

NCY big valve cylinder head for 61mm 171cc GY6 engines. High-flow porting, oversized valves. Fits Genuine Buddy 125/150/170i & GY6 157QMJ. SKU 1100-1254.

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NCY Big Valve High-Flow Cylinder Head - 61mm GY6 (171cc)

Upgrade your GY6 150–232cc CVT with TFC's forged aluminum sheave assembly. Dual-slot tuning, gold anodized finish, includes M28 stainless nut. Direct fit.

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NCY CVT ramp plate for 139QMB GY50 — face view showing splined center bore and three ramp channels with sliders

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NCY CVT Ramp Plate - 139QMB, Buddy 50, Roughhouse 50

NCY bearing CVT spring seat detail — high-tensile steel races, fits QMB139 / Honda Dio AF16/AF18/AF25 / Kymco ZX50 / SYM Fiddle 50, made in Taiwan

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NCY Bearing Spring Seat - 139QMB, Dio, Elite 50

NCY 1500 RPM contra/compression spring for GY6 CVT. Fits 125cc/150cc 157QMJ engines. Prevents belt slip, raises shift point. Made in Taiwan. SKU 1200-1027.

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NCY 1500 RPM Compression / Contra Spring | GY6 125-200cc CVT

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Keihin Style Small Round 4mm main jet (99101-116 style) - machined brass with M4 threaded body, round 5mm head, and center metering orifice, 3/4 angle view

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NCY 1500 RPM clutch springs (set of 3) for Minarelli & Yamaha 50cc 2-stroke scooters. Earlier engagement, better acceleration. SKU: 1200-1015.

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Dr. Pulley 16x13mm sliding roller weights for 139QMB 50-80cc CVT scooters. 3g-11g options, 6 per set. Fits Genuine Buddy 50, Honda Ruckus, Yamaha Zuma & more.

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NCY 26mm black performance front forks for Yamaha Jog 50 & 139QMB scooters. Disc brake ready, 385mm, ISO 9001. Ships from Scooterworks USA.

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RDLN racing clutch kit 1200-1275 showing red reinforced clutch shoe assembly with cross-drilled vented drive face and red anodized vented clutch bell drum for 139QMB GY6 50cc engines

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NCY Honda Dio Performance Stator Alternator Flywheel

Dr. Pulley 16x13mm variator slide set (3 pcs) for 139QMB, Honda Ruckus/Dio, Genuine Buddy 50, Kymco Agility 50. Low-friction nylon. SKU 1200-1261.

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Dr. Pulley 16x13 Variator Slide Set: 139QMB, Dio, Ruckus

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NCY Clutch Springs (1500RPM) Vino125,Zuma125

NCY adjustable secondary sliding sheave clutch pulley assembly for Yamaha Zuma 50 & Jog. Dual ramp angles for faster takeoff or higher top speed. Made in Taiwan.

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NCY Jog / Zuma Performance Clutch Assembly - Adjustable

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NCY Compression Spring (2000rpm); GY6 - 152QMI, 157QMJ, 161QMK and, more.

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NCY 2000rpm Compression / Contra Spring - GY6 125-200cc

NCY 20x12mm roller weights — showing set of 6 red rollers with brass sleeves and size/weight stamping

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Polini 95mm hi-speed variator kit (SKU 1200-1210, MPN 241.626) — all components laid out: precision-cast aluminum variator face with Polini-stamped ramp plate, 3 slider guides, 20mm steel drive boss, and two sets of Polini-stamped 16x13mm roller weights (5.6g and 6.9g); for Honda Ruckus NPS50 and Metropolitan CHF50

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Polini Hi-Speed Variator Kit - Honda Ruckus / Metropolitan

Dr. Pulley 18x14mm sliding roller weights, set of 6. Fits GY6 125/150/170cc, Genuine Buddy, Kymco, SYM, Lance & more. Choose your gram weight.

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NCY Blue Series 90mm drum brake shoes SKU 1000-1125 on original packaging showing two blue-coated grooved shoes assembled with high-tension springs, NCY Motor Sports branding and ISO 9001 certification

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NCY 115mm gold PTFE-coated variator (1200-1041) for GY6 125/150cc — drive face and sliding sheave with rubber sliders

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Dr. Pulley 20x15mm sliding roller weights (SKU 1200-1201) — set of 6 tan wedge-shaped SL-nylon sliders in retail packaging, for Honda PCX and Genuine Blur 220i CVT variators

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NCY Performance pipe. Get a mean-tuned pipe to boost your Genuine Buddy, Black Cat, Rattler or RoughHouse 50cc's performance, looks, and SOUND!

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NCY Performance Pipe - Genuine Buddy 50 & RoughHouse 50

NCY performance valve spring set for most 125-170cc engines showing two electroplated coil springs — larger outer spring and smaller inner spring

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NCY Performance Valve Spring Set | Genuine & GY6 125-170cc

NCY Racing Grips 7/8" in red — knurled rubber pair with red accent ring and inserts, universal scooter fit SKU 0800-1136

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NCY Engine Case Boring Tool - GY6 125/150cc

NCY Blue Series grooved brake shoes for 139QMB and Minarelli 2T drum brakes — 104mm x 52.82mm x 25.2mm with OE-style springs

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Dr. Pulley 15x12mm sliding roller weights - set of 6 cream nylon sliders with brass inserts for Minarelli 50cc CVT variators

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NCY 28/23mm GY6 racing valve set - pair showing intake (27.8mm) and exhaust (22.9mm) valves with 5mm stems, front view

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NCY High-RPM Racing Valve Set - 28/23mm for GY6

Polini Corsa 72cc big bore kit 1100-1461 full kit showing black iron-bore cylinder with 5-fin cooling fins finned aluminum Corsa cylinder head 47mm flat-top piston rings wrist pin circlips base gasket head gasket and brass carburetor jet for Honda Dio and Kymco ZX

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Polini Corsa Big Bore Kit 72cc - Honda Dio / Kymco ZX 50

NCY Super Transmission Set (1200-1197) for Yamaha Zuma 50 2T — full kit showing variator, drive face, Gen 4 green clutch, PTFE clutch bell, secondary slider, roller weights, and 1500 RPM spring2T

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NCY Performance Super Transmission Kit | Yamaha Zuma 50 2T

Prima 18x14mm roller weight kit for GY6 125-170cc scooters. 36 rollers, 6g-17g range. Dial in your CVT for acceleration or top speed. SKU 1400-1070.

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Prima 18x14 Roller Weight Tuning Kit | GY6 Genuine SYM KYMCO

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NCY 18x14mm CVT roller weights for GY6 150cc, Genuine Buddy 125/150/170i, Kymco, SYM & Lance. Set of 6. Sizes 8g–13g. Tune acceleration or top speed.

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NCY 18x14mm Roller Weights | GY6 Genuine Buddy Kymco SYM

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NCY high-lift performance camshaft for GY6 139QMB 50cc–100cc engines. Drop-in fit for big-bore kits. Includes 34-tooth timing sprocket. SKU 1100-1250.

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NCY Performance Camshaft 139QMB GY6 50cc

NCY CNC-machined billet aluminum handlebar stand for Honda Ruckus & Metropolitan. Anodized black, 7/8" clamp, direct bolt-on. No cutting required.

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NCY Billet Handlebar Stand - Black - Honda Ruckus

NCY lightened clutch bell 125mm ID, 19-spline for Genuine Buddy 125–170i, GY6 150cc & Kymco. Faster spool, anti-glaze drum, cross-drilled cooling vents.

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NCY Performance Clutch Drum: Buddy 125/170i, GY6 150, Navi

NCY Gen 4 green performance clutch angled view showing oversized friction pads and reinforced inner brace

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NCY Performance Clutch Gen 4 - GY6 150 & Navi 110

NCY black turbo stator fan for GY6 and QMB139 engines — front view showing fan blades and center hub

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NCY Turbo Stator Cooling Fan Black | GY6 139QMB 50-200cc

NCY GY6 ball-bearing secondary spring seat (1200-1030) — zinc-plated steel bearing ring and loose ball bearings

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NCY Ball-Bearing Secondary Spring Seat | GY6 & QMK 125-170cc

Naraku variator control shim kit – 30 polished steel annular shims in 0.1mm, 0.2mm, and 0.5mm thicknesses for 20mm variator boss adjustment on QMB139 and 50cc scooter engines

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Naraku Variator Control Shims – 20mm Boss, 30-Piece

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NCY crankcase decompression kit for Genuine QMB and GY6 showing anodized billet aluminum cap and oil-resistant breather tubing with hose clamps

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NCY Crankcase Decompression Kit - Genuine/GY6

NCY PTFE-coated star racing clutch bell for GY6 125cc 150cc scooters top view

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NCY Performance Anti-Glaze Clutch Bell | GY6 150cc Navi 110

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