12 Speed Cassette (XD Compatible)

Gear Ratio:
9-46T: 9-11-13-15-18-21-24-28-32-36-40-46T
9-50T: 9-11-13-15-18-21-24-28-32-36-42-50T
10-50T: 10-12-14-16-18-21-24-28-32-36-42-50
10-52T: 10-12-14-16-18-21-24-28-32-36-42-52

Material : High strength steel and 7075 Alloy(46T/50T/52T)

Weight :
ULT Version about 368g(46T), about 380g(50T), about 395g(52T)
Full Black L version: About 533g

Rb = Rainbow color
Sil = Silver color
Gd = Gold color

ZTTO Ultimate series

ZTTO Cassette offers a larger range, more value and lighter weight than the competition. Now, our ULT cassette has an improved structure for smoother shifting.

Upgrade locking ring

all of ULT cassette upgraded locking ring

Shi's and SR"s derailleur is compatible. you can use like M8000/ GX / X1 etc.

9-50T 556% RANGE

The new ZTTO 9-50T cassette weighs in at 375 grams, and has a 556% gear range

For comparison, SR's 10-50 tooth X01 cassette weights 360 grams with a 500% gear range, cost about 340USD.
while Shi's 11-51 tooth cassette weighs 367 grams with a 510% gear range. cost about 315 USD.

9T not only increased the range, but also reduce the weight of the system, because there is a greater range allows you to use a smaller chainring, also reduces the risk chainring hit stone

ULT Version Super Light Weight 375g/388g

Light weight and strong, a perfect balance

CNC Made, Precise Shifting Performance

Rainbow Painting

The special processing technology makes the cassette show beautiful color in the rotation.

What is the difference between ULT and ULT pro?

ULT pro, The chain will not fall when the pedaling back. Increase 50T thickness to accommodate greater pedaling power.

9-50T L Version

Experience the latest technology at an ultra-low price. Although the weight is relatively heavy, it is finally worth the price.