Their special rubber compound minimizes the risk of overheating
The MIPS® brain protection system reduces oblique impact forces in the event of a crash
So compromises and shortcuts when it comes to gear can be pretty risky
Matrix composite chuck
Shimano 42D SLX FC M660 10 Noir Variation:Shimano, Y1LU98030, 42T, 10-spd, BCD: 104 mm, 4-Bolt, SLX FC-M660-10, Outer Chainring, For 24/32/42, Aluminum, Black Their special rubber compound minimizes* Shimano, 42D, 10 vit., BCD 104mm, 4 Boulon, SLX FC M660 10, Plateau Extrieur, Pour 22 32 44, Aluminium, Noir, Y1LU98030