All the benefits of the original Thudbuster design in a smaller package. The Thudbuster ST uses a shorter parallel-linkage mechanism to yield the ideal suspension post for:

XC riders looking to “take the edge off” with less of a weight penalty Road riding enthusiasts Smaller riders and tandem stokers (due to the smaller minimum extension) Comfort bike owners The shorter linkage design still provides 1.3 inches of active stiction-free travel. The compression and rebound damping is handled by a single urethane elastomer, which can be changed to fit your size and riding style.

Specs

post
forged aluminum

linkage
machined aluminum

pivots
stainless steel axles with Teflon® coated bushings

elastomers
single urethane unit with various spring rates

travel
1.3 inches (33mm)

length
351mm (401mm, 27.2 XL version)

weight
440-460g (depending on post diameter) 480g (27.2 XL version)

extension
from seat tube exit to center of saddle rails: min. 98mm - max. 251mm (301mm, 27.2 XL version)

diameter
25.4, 26.8, 27.0, 27.2, 27.2XL, 30.9, 31.6 (Direct fit) additional diameters from 26.0 To 31.8 can be fit with a 25.4 or 27.2 mm Thudbuster post plus the correct shim