GY6 QMB139 88cc NCY Big Bore Kit
$ 115.99 $ 129.99
Want a real screamer? Then this 88cc big bore kit for you, although its not a bolt on item for most QMB 139 bikes. Most of the time, engine cases must be cut. Order part number 1400-1001, Engine Bore Tool if there is no access to a machine shop. Its also recommended to get part number 1100-1239, 50mm big valve head as well, as some stock heads will not fit.
Have a look at our Decompression Tube Assembly which replaces your dipstick and allows excess crank case pressure to be released. Good idea to install one of these alongside any cylinder kit upgrade.
Motoforce racing variator
He're a budget friendly upgrade for your zuma, jog or other minarelli style scoot! This motoforce kit comes with rollers, boss, ramp, and pulley with slides. Comes with 5,5 AND...
Retro offroad T/Hoodie
Represent scooterswapshop, and look like a boss while doing it. This T includes a sweet cub-EZ90 jumping next to yamaha prebug. Pure win all around.
Dunlop TT-93 Race tire 90/90-10
If your looking for an ULTRA sticky race tire, look no further. The hard to get tires are in stock at the swapshop. These are killer for yamaha jog, elite, aeros,...
Malossi MHR ZUMA 70cc race cylinder
$ 289.00 $ 311.00
We now stock the malossi MHR 70cc race cylinder for the yamaha zuma vertical! Italian designed and crafted, alum single ring race bore with nikasil plating. Expect 14+hp from this...