The Alloy and Composite kits are different

Made from stainless steel

has lots of protection and has 24 vents

stash a Quick Stow flask in one of the specifically sized harness pockets

They’re finished with a distinctive Oakley B1B logo on the front

Rockshox Metric Rear Shock Spring - 151mm Metric - 450lbs - Electric Red Out of Stock The Alloy and Composite kitsDial in your Rockshox coil shock with these metric coil springs. Available in different sizes and many springs rates from 250 650lbs. Set the correct sag and get the most out of your shocks compression and rebound settings for the perfect ride. Who's this item for: Riders looking for a different spring rate on their factory Rockshox coil shock or for riders needing a spring for their aftermarket shock (they do not come included). Compatibility: They