Spindle Size: These cranks use a 30mm spindle

The Bell Spark MIPS Helmet is designed for trail riders and loaded with features

Eagle NX Crankset

these will not convert them to 148mm (Boost)

Pins: 10 pins each side / EV01 Grip

Maxxis FR Freeride Tube - 48mm Presta Removable Valve Core - 2.2-2.5 Inch - 27.5 Inch PLP|EMTB Optimised Spindle Size: These cranks useMaxxis Freeride tubes are for aggressive riders who are willing to take a weight penalty for flat protection. Who's this item for: These are heavier tubes that work great for downhill oriented riding. However, you will feel the added weight and they are not the best choice for trail riding. We recommend Maxxis Welterweight tubes for trail bikes. Removable valve core: Yes, the valve cores are removable. Tube wall thickness: 1. 2mm. Weight: 26 x 2. 2 2.