ZTTO Ultimate MTB 12 Speed 9-50T ULT Pro Cassette Rainbow

Ratios:9-11-13-15-18-21-24-28-32-36-42-50T
Material : High strength steel (9-42T) and 7075 Alloy(50T)
Weight : about 388g
Color : rainbow (every piece is different)

XD hub Compatible

This ULT Pro cassette works with Shi's derailleur ,but it is not compatible with shi's chain.
You have to use other brands'chain (such as ZTTO, In the video we used the ZTTO gold 12 speed chain).
We will optimize the cassette for different chain.

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?

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