NCY Performance 2000 RPM Torque Compression Spring For 50cc-100cc QMB139 Scooters

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Description

This is an NCY Performance torque compression spring – rated at 2000 RPM – designed for 50cc to 100cc scooter engines with the QMB139 or GY6 style CVT transmission.
If you're looking to get better acceleration, hold RPMs longer, or just want a snappier takeoff, this spring is a popular upgrade.

High Performance 2000RPM Racing Torque With 3 Clutch Springs For GY6 50Cc-100Cc Engine Scooter Moped Atv I156736461

It goes on the clutch pulley – the rear pulley in the CVT – and increases the resistance, which keeps the transmission in a lower gear longer so the engine revs up faster and puts more power to the ground.

NCY RZR170 Performance Torque Spring

Brand is NCY – they're well-known in the scooter tuning scene.

High Performance 2000RPM Racing Torque With 3 Clutch Springs For GY6 50Cc-100Cc Engine Scooter Moped Atv I3538430571

Part number is 1200-1053 2000, and it's also cross-referenced as N51.

NCY Compression Spring (GY6), 1000 rpm NCY

This is a new part – no warranty mentioned, but it's a simple spring.
Installation requires taking the clutch bell off, removing the old spring, and compressing this one on – you'll need a clutch spring tool or some muscle.

NCY COMPRESSION SPRING (2000RPM ); GY6 - StoneBuilt Racing

It's a common mod for GY6-based scooters, mopeds, and mini ATVs.
If you're tired of sluggish starts or want to climb hills better, this spring helps.
Just be aware it'll raise your engagement RPM, so your engine will rev a bit higher before moving – that's the point.

NCY PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS

Good for tuners who want more performance out of their small displacement scooter.
No UPC listed.

NCY TORQUE COMPRESSION SPRING FOR VINO 125 & ZUMA 125

Grab one if you're rebuilding your CVT or just want a little extra zip around town.

NCY PERFORMANCE TORQUE COMPRESSION SPRING FOR 50cc - 100cc QMB139 - GY6 STORE