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Features including a patented breakaway peak
Nipples: Sapim Polyax Secure Lock Black Brass
with the benefits of 6
Cog-tooth span: 11-50T cassette11-13-15-17-19-21-24-28-32-36-42-50
The Helix TR uses a sleeved alloy material that keeps it lightweight and keeps the cost down
SDG I-Beam Seat Post - 31.6mm - 400mm Length YGroup_7083815010349 Features including a patented breakawayAn engineering masterpiece. Proven, single bolt post which offers unrivalled ease of installation and fore aft micro adjustment to I Beam saddles. Bombproof design, with a 2014 aluminum hard anodized machined tube, paired with a cold forged 2014 head and clamp. While only compatible to SDG's patented I Beam Technology saddles the original mono rail is the premier seat to post connection system, which utilizes the latest composite materials to create
