Shimano Dura-Ace 9000 53t 110mm 11-Speed Chainring for 39/53t MFPN=D33RFU-U Gender/Age Adult Rotational Protection Yes

Gender/Age Adult Rotational Protection Yes Minimum Head Circumference 57 Color Polar White Size Large Visor Included Yes Multi Impact No Weight 390 Helmet Certifications Complies with the U

Features fitted pockets specifically designed to fit and easily access other Lezyne accessories

4130 crmo top & down tube

Model Spinelock Mount Rail Clamp/Strap Capacity 610 Cu In (10

Ergonomic lever design with reach adjustment & return springHinged clamp style

Shimano Dura-Ace 9000 53t 110mm 11-Speed Chainring for 39/53t MFPN=D33RFU-U Gender/Age Adult Rotational Protection YesThis Shimano chainring allows you to update your Dura Ace FC 9000 11 speed crankset with a chainring configuration to best fit your riding style. Integrates Shimano Hollowglide Technology: the high rigidity hollow structure cuts down on weight yet maintains strength to provide better power transfer and quicker more precise front shifting Features a weight saving 4 bolt design with a BCD of 110 mm Ideal for road cycling Ring Position Type Outer Tooth