Seatpost G4 THUDBUSTER - 27.2 BLK LONG TRAVEL - BOXED (SP7A272)

BOLT-ON COMFORT
THUDBUSTER G4 Long Travel
For over 20 years, Thudbuster has been the bicycle industry standard in suspension seatposts by providing unequaled comfort and reliability to riders around the world. 

We are now proud to announce the latest evolution to that legacy with the all-new Thudbuster G4 LT. 

The new Thudbuster G4 LT is superior to its predecessor in every way.  Building on Thudbuster’s proven parallel linkage technology we have completely re-designed the seatpost for increased durability, additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design. By improving on this already legendary design, we’re confident to say that the newest generation Thudbuster is the most advanced suspension seatpost ever made.

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 shim)

The Thudbuster LT suspension mechanism has a minimum extension of 146mm (5.74 inches).  This means you need at least 146mm (5.74 inches) of clearance between the bicycle frame and the seat rail clamps.