Ergon GP5 Grips - Lock-On Small Black/Gray MFPN=00.4318.044.000 This link explaining 148mm Boost

This link explaining 148mm Boost spacing will help you decide if you need the M5 or M8

Frame spacing:

Gender/Age Adult Rotational Protection No Minimum Head Circumference 52 Color Race Grey Size Medium Visor Included No Multi Impact No Weight 270 Helmet Certifications Complies with the U

Model 2020 36 FIT4 F-S Description Top Cap Assembly

Ergon GP5 Grips - Lock-On Small Black/Gray MFPN=00.4318.044.000 This link explaining 148mm BoostCombines a traditional Ergon hand platform with an extended L bend bar end for multiple riding positions. Not carbon bar compatible Two hand position fiberglass composite barend with rubber inserts Length 143. 7 Flange No Lock On Yes Shape Ergonomic Color Black Gray Weight 371 Defined Color Black Lock On Type Lock On Size Small