absoluteBLACK Premium Oval 110 BCD Outer Chainring for FSA ABS - 53t 110 FSA ABS BCD 4-Bolt For 53/39 Combination Black. absoluteBLACK Premium Oval 110 BCD Chainrings utilize absoluteBLACKs top-tier design features to greatly improve traction and speed. They are designed for 4-bolt or 5-bolt FSA cranks such as Gossamer SL-K and K-Force with asymmetric bolt spacing. 4 and 5-bolt cranks are identical with the exception of the one hidden bolt behind the crank arm in 5-bolt design which is not needed. Optimized with smooth shifting in mind premium chainrings have a unique shift ramp and recess design. Chainrings are crafted from CNC machined 7075 aluminum and feature an anodized finish for exceptional durability.

Oval shape reduces stress on knees helps to keep your legs fresh and does not feel any different while riding

Chainring design reduces the possibility of leg cramps and allows you to maintain a better cadence while climbing

For Gossamer and SL-K cranks use the original FSA hardware for installation

For K-Force cranks you will need to purchase absoluteBLACK bolt covers for installation