The Thudbuster G4 is superior to its predecessor in every way. Building on Thudbusters proven parallel linkage technology we have completely re-designed the seatpost for increased durability and additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design.

Maximum suspension: 90mm of travel (3.54in) for maximum shock absorption while cycling.
Reduce riding pain & increase comfort: Absorb bumps, dips, and drops. Soften your ride and make biking more comfortable and enjoyable so you can ride longer.
High quality & durable: Completely redesigned from the previous model for increased durability and additional suspension travel.
No shop tools needed: Tool-free elastomer change and a single-bolt seat clamp design for easy seatpost adjustments.

SPECS:

Setback
5mm (unweighted)

Post
Forged aluminum

Seat Clamp
Single bolt fastening and angle adjustment design

Pivots
Threaded, serviceable, hard anodized aluminum axles flanged PTFE bushings

Elastomer
Medium firm elastomer pre-installed from the factory. Extra Soft, Soft, Firm, and Extra Firm elastomers sold separately

Travel
90mm / 3.54in

Length
27.2 390mm. 30.9 + 31.6 420mm

Weight
750 grams (31.6)

Max Rider Weight
250lbs / 113kg

Extension
Minimum 146mm
Maximum 290mm for 27.2, 320mm for 30.9 +31.6

Diameter (Direct Fit)
27.2, 30.9, 31.6
(additional diameters available with seatpost adapter)