Switch Aero System turns a road bike into a triathlon bike – and back again
RedShift Dual Position Seatpost Replacement Hardware Kit | eBay
Replacement Hardware Kit for Dual-Position Seatpost – Redshift Sports
Amazon.com : REDSHIFT Dual-Position Bike Seatpost, Aluminum Bicycle Seat Post Saddle Pole, Cycle Biking Accessories and Parts, 27.2mm x 350mm Black : Sports & Outdoors
Redshift Dual Position Seat Post 27.2 - Schwab Cycles
Amazon.com : REDSHIFT Dual-Position Bike Seatpost, Aluminum Bicycle Seat Post Saddle Pole, Cycle Biking Accessories and Parts, 27.2mm x 350mm Black : Sports & Outdoors