Hope Pro 4 Trial - Single Speed Rear 6 Bolt Disc Hub - 10x135mm Bolt-Up - 32 Hole - Single Speed - Purple algolia-ignore Photochromic models do not come

Photochromic models do not come with the spare lens

The bolts are two-piece and the female side is 5mm long

Not compatible with 2021 Orbea Rise Alloy frames

Well ventilated and lightweight this helmet can be worn by a toddler without fuss

Hope Pro 4 Trial - Single Speed Rear 6 Bolt Disc Hub - 10x135mm Bolt-Up - 32 Hole - Single Speed - Purple algolia-ignore Photochromic models do not comeThe Pro 4 is an incredibly versatile and easily serviceable hub that builds upon Hope's reputation for bulletproof quality and attention to detail. The hubs are machined from a single billet of 2014 T6 aluminium and run on stainless steel sealed cartridge bearings for smooth running and outstanding reliability. The 4 pawl ratchet system has 44 teeth with solid and reliable 8. 2 deg engagement with that unmistakable Hope sound. The Pro 4 spoke flange