Five elastomer spring options: Enables riders to select the ideal level of suspension for their comfort and performance needs
Medium elastomer included: Offers a balanced ride for a wide range of rider weights
Easy installation: Allows quick customization without specialized tools
Durable construction: Designed for long-lasting performance under heavy use
Compatible with standard seatposts: Fits most road and mountain bike seatposts
Summarized by Shop
Tune your desired level of cushion with five different eeSilk+ seatpost elastomer springs.
eeSilk+ seatposts ship with a MEDIUM elastomer installed. X-Soft, soft, firm, and X-firm elastomers are sold separately.
X-SOFT = Riders <110lb (<50kg) SOFT = Riders 100-160lb (45-73kg) MEDIUM (Included) = Riders 150-210lb (68-95kg) FIRM = 200-25
Elastomer Spring Options
Extra Soft (1), Soft (3), Medium (5), Firm (7), Extra Firm (9)
Weight Range for Extra Soft
110 lb (50 kg) and above
Weight Range for Soft
100–160 lb (45–73 kg)
Weight Range for Medium
150–210 lb (68–95 kg)
Weight Range for Firm
200–250 lb (90–113 kg)
Summarized by Shop
4.7
7 ratings
5
4
3
2
1
Nice Options
Easy to insert into the seat post system to customize the ride for a lighter rider.
C
Christian · August 26, 2026
elastomer change
I went from the 5 to the 3, and the operation was easy. the ee silk+ suspension is so very well designed that it would seem impossible to get it wrong. I've been known to do that, but not in this case. easy-peasy! one comment, and not a complaint, is that it would be nice to have the # stamped on the elastomer.
D
david · May 21, 2026
I changed the elastomer in my seat post to a softer one. Even though I had the right one for my weight, it made a big difference in comfort. Surprisingly, the shock stem made even a bigger difference in comfort, now the harsh terrain is much more tolerable, and I can ride longer.