Ideally suited to climbing, the Shimano TZ21 Freewheel 7 speed (14-28) Cassette offers a staggeringly low 38-tooth gear that is great for tackling steep gradients. With Shimano's MegaRange system and a durable tool steel and aluminium construction, this freewheel offers both performance and longevity.
. This freewheel is a great mountain bike cassette that offers both durability and performance. With Shimano's MegaRange system, smooth shifting is ensured even up to the massive 34-tooth cog.
Constructed from durable tool steel with an aluminium 38-tooth cog, this cassette can be easily installed and maintained.
FEATURES
- Seven gears of the TZ21 freewheel ensure a smooth transition when shifting up or down the block
- A reliable 7-speed screw-on freewheel
- Engineered for smooth chain movement up or down the block
- For 7-speed gear systems
- Can be easily installed onto compatible screw-on type hub
- Suitable for mountain bikes and a wide range of other cycles