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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Upgrade your Brompton bike with the Brompton Advance 4-Speed Sprocket Set
Double layer design for ultimate protection on city streets
while semi-integrated cable routing maintains the frame's clean lines
it’s ready for all your adventures
1 fixing it is quickly mounted and taken off the bike rack
J1 Youth helmet ONE Upgrade your Brompton bike withThe Lazer J1 helmet is the perfect transition helmet for young riders becoming adults. With 19 vents and in mold technology, it offers the same technical specifications and impact protection as adult helmets. Stay cool and ride confidently with the TS+ retention system and integrated visor. Own the ride with J1!
