ZTTO Ultimate MTB 12 Speed 9-50T ULT / ULT pro XD Cassette Rainbow

XD Compatible
9-11-13-15-18-21-24-28-32-36-42-50
Material : High strength steel (9-42T) and 7075 Alloy(50T)
please install it with 40N.m
Weight : about 375g(ULT) / 385g(ULT pro)
Color : rainbow (everyone is different)

M7100 +ZTTO 12s Gold Chain + ZTTO 9-50T ULT in the video. you can use any 12 speed chain. Also we have a 1x12 groupset, please check it in ZTTO official store.
The latest version 50T is changed to black color, Compared to the gray 50T version, we adjusted a bit of the shift design to optimize performance and strength.

Lock ring update

This update does not affect performance, no matter which version you receive, you can use it normally. The new version mainly increases the contact area with the tool.

Good Compatibility

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.

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.

What is the difference between ULT and ULT pro?

The ULT pro, chain will not fall when the pedaling back. Increase 50T thickness to accommodate greater pedaling power.(sure, that cause to added a little weight)

The ULT pro, How is it working?

please check the 1x12 9-50T groupset in ZTTO Official Store, You will find the video for 9-50T ULT pro Cassette.

9T ! We did it

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

Light Weight 375g(ULT) / 380g (ULT PRO)

Light weight and strong, a perfect balance

CNC Made, Precise Shifting Performance

XD Compatible

this cassette is compatible with XD hub only, just like XX1 XG1299 cassette, please note.

Rainbow Painting

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