Cirrus Kinekt Suspension Seatpost - Aluminum 30.9 420mm LR- 80-180lb Rider BLKCirrus Kinekt Suspension Seatpost Aluminum 30. 9 420mm LR 80 180lb Rider Black. The Kinekt Active LR Aluminum Suspension Seatpost is sleek and versatile providing 35mm travel with pre load capability to effectively isolate your body from surface vibrations and impacts. LR is rated for riders 80 180lbs and includes springs tuned for a 140 180lb rider. This isolation improves comfort control and confidence which ultimately leads to a more enjoyable