Dr. Pulley Sliding Weights 16mm X 13mm
COMPATIBILITY:
BSV – AX 50 2T, GP-SP 50 2T, ZX 50 2T
BMS – Apache 50 4T, Heritage 50 4T, Romans 50 4T
Daelim – S Five 50 2T, E Five 50 2T, Cordi 50 2T, A Four 50 2T
Garelli – Capri 50 4T, Ciclone 50 4T
Gilera – Easy Moving 50 2T, Storm 50 2T, Typhoon 50 2T
Honda – Bali 50 2T, Dio SP-SR 50 2T, Dio ZX 50 2T, Lead 50 2T, SFX 50 2T, SGX 50 Sky 50 2T, SH 50 2T, Shadow 50 2T,
Sport SFX 50 2T, Vision 50 2T, X8R 50 2T, Ruckus (Zoomer) 50 4T, Metropolitan 50 4T
HSC – SC 01 50 2T
Kymco – Agility 50 4T, CX 50 Super 50 2T, Dink 50 2T, DJX 50 2T, DJY 50 2T, DY World 50 2T, Filly 50 4T, Heroism 50 2T,
K 12 50 2T, KB 50 2T, New Dink 50 4T, Peoples S 50 4T, Sniper 50 DD 2T, Super 8 50 4T
Lance – Charming 50 4T, GTR 50 4T
Peugeot – Buxy 50 2T, Elyseo 50 2T, Jet Force 50 2T, Ludix 50 2T, Blaster 50 2T, RS Buxy 50 2T, Speedake 50 2T, Speedfight 206 50 2T,
Speedfight 50 2T, Squab 50 2T, ST Rapido 50 2T, SV Geo 50 2T, TKR 50 2T, Trekker 50 2T, Vivacity 50 2T, X-Fight 50 2T, Zenith 50 2T
PGO – Big Max 50 2T, Comet 50 2T, Star 50 2T
Piaggio – Free 50 2T, NRG-NTT-MC2 50 2T, Quartz 50 2T, Sfera 50 2T, Zip 50 2T
Roketa – Bahama 50 4T, Maui 50 4T, Sicily 50 4T
SYM – Fiddle 50 4T, DD 50 2T, Jet Sportx SR 50 2T, Symply 50 4T
Tank – Urban 50 4T, Sporty 50 4T, Viaggio 50 4T
Many Other 50cc 139QMB Based Engines
We highly recommend that you begin by upgrading the variator roller weights before engaging in any performance upgrades. This is the simplest of upgrades and the least expensive. This is a minimal investment and offers a maximum return.
The main rule for tuning variators is the lighter the roller the more rpm’s are needed to push the rolls outwards through centrifugal motion to set the gear change in motion. Heavier roller weights need lower rpm’s to start moving.
Heavier roller weights = slower take-off speed, more acceleration = higher maximum speed.
Lighter roller weights = faster take-off speed, less acceleration = lower achievable speed.
The right balance is an individual choice since a scooter racer will want heavier weights to achieve a higher overall speed so that they might be faster at full throttle. For daily use a rider might prefer lighter weights for more power to take off faster at stop light.
Dr. Pulley Roller Weights — The latest roller weights to hit the market and the most advanced weights available. These sliding rollers perform up to 20% better than standard round weights and last up to 18% longer with 22% less performance material loss. The weights have several unique features such as their composite material being nylon for faster performance.
Made of unique tribological material SL-9T and SL-9TS (oilless PA46) Low friction coefficient / Low wear / High temperature resistance Aluminum compatible; No abrasive fibers (glass fiber or carbon fiber) Fastest Roller Weights available
**NOTE: Electrical, High Performance, Aftermarket items are non-returnable so please check photos and specifications before ordering.
Please see our Warranty and Returns Policy