Shimano Front Chainwheel FC-M311Shimano's Altus FC M311 is of a rigid 2 piece construction with Hyperdrive SG X chainrings for fast and smooth gear shifting performance for off road enthusiasts. The crankset is Dual SIS compatible and comes with a pre installed chain guard.

• Crank arm material: Aluminum

Advanced knob shaping creates extra gripping edges

They are suitable for Dura Ace

Air Chambers: Four

It is fine tuned to work efficiently with both Trail/Enduro and All Mountain shoes

The Smith Loam MTB Goggles let you dial in every curve

K-Armor allows for a tighter weave and the use of less rubber

• BR-R8070

Additional Protection: The TPR knobbies on the back can offer added protection against overhanging trail debris such as branches and blackberry tendrils and will help to keep the skin on your knuckles if you go down in a rocky section

Weight: 1000gLocking Size: 13

Double ”X” Bridge Shape

Simple setup and reliable trail performance