H&H 18 speed 12-28T upgrade kit v4/P&T line/SQT Shifter Left tiparts because we build them to

because we build them to ultra-tight aerospace tolerances

♠️ Option to upgrade to Ceramic spindle

Material: Aluminum body

♣ Monkii clip B need to be purchased separately

The small TWIST bottle 450 with an optimized easy squeeze thanks to a softer material and new bottle cap with a high flow

H&H 18 speed 12-28T upgrade kit v4/P&T line/SQT Shifter Left tiparts because we build them toDo you ever feel from Left shifting is out of gear to climb? this upgrade kit is to help expand the gear range, for riders that going to touring with heavy loads, easy to cycle steep uphill climbs with more low gear. Brompton 12 speed cassette is 11 13 15 18 H&H 6 speed unibody cassette is 12 14 17 20 24 28 compare to upgrade to 21 speed, this setup will prevent chain rubbing rear brake housing on 28T (Low gear 1) This kit set is to upgrade P T C line