Ritchey's lightest seatpost pairs a FlexLogic carbon layup with a single-bolt SideBinder clamp, built for riders who want compliance without losing support on long days.

Highlights

  • FlexLogic carbon layup, tuned for extra vertical compliance over Ritchey's standard carbon layup
  • Single-bolt SideBinder clamp: one M6 bolt, precision-forged alloy, interchangeable clamp inserts for round or carbon rails
  • Available in 5mm or 20mm offset to fine-tune saddle setback
  • 27.2mm diameter, 350mm length, 100mm minimum insert
  • Matte UD carbon finish

Compliance and clamp

The FlexLogic layup is designed to flex more vertically than a standard carbon layup for extra road and trail-chatter isolation, while the single-bolt clamp keeps setup simple and the interchangeable clamp inserts suit round or carbon-rail saddles.

Compatibility & fit

27.2mm seat tube only (this is the diameter Dirt Works currently stocks). Minimum insertion depth is 100mm. Saddle clamp torque is 12Nm (max); seat collar torque is 6Nm (max), or 7Nm (max) on Ritchey steel frames. The Tune workshop can torque this to spec during a fit.

Options

OffsetNotes
5mm170g (27.2x350mm)
20mm180g (27.2x350mm)
Ritchey covers this product for two years from the date of purchase against defects in materials and workmanship (the Ritchey International warranty, which covers Australia). Normal wear and tear isn't covered. For warranty support, return the product to Tune Cycles and we'll manage the claim with Ritchey's Australian distributor. This is in addition to your rights under the Australian Consumer Law, so keep your proof of purchase.
  • FlexLogic carbon layup for extra vertical compliance
  • Single-bolt SideBinder clamp, interchangeable rail inserts
  • 27.2mm diameter, 350mm length
  • 5mm or 20mm offset
  • Matte UD carbon finish
MaterialCarbon fibre, matte UD finish
Diameter27.2mm
Length350mm (incl. 100mm minimum insert)
Saddle clamp7x7mm rail clamp, single M6 SideBinder bolt
Saddle clamp torque12Nm (max)
Seat collar torque6Nm (max); 7Nm (max) on Ritchey steel frames
Offset (option)5mm (170g) or 20mm (180g), both 27.2x350mm
SKU DTW-RIG-SPSPL-PAR
Brand Ritchey