Cut weight from your Specialized Shiv TT, Venge Disc or Allez Sprint with a handmade carbon seatpost built for an aggressive forward aero position.
⚖️ Lightweight handmade carbon construction
🚴 +15mm forward aero offset
🔧 Three Specialized bike platforms
🛡️ Carbon-rail-friendly saddle clamp
The Alpitude Tonale is a high-performance carbon seatpost developed for the Specialized S-Works Shiv TT. It is also compatible with selected Venge Disc and Allez Sprint models, creating an exceptionally light upgrade across three of Specialized’s fastest platforms.
Its +15mm offset supports a more forward saddle position for aggressive TT and triathlon setups. Four available lengths make it easier to achieve the required saddle height without carrying unnecessary material and weight.
Every Tonale seatpost is handmade in Italy using premium carbon fibre, high-pressure moulding and an internal silicone bladder. This process produces a clean, consistent finish both inside and outside the post.
Compatibility and specifications
Allez Sprint 2019–2021
Weight examples
- 300mm, 3K Twill: 127g
- 400mm, 3K Twill: 144g
- 400mm, UD: 158g
Weights are manufacturer-supplied examples. Final weight can vary slightly according to length, carbon finish and normal handmade manufacturing tolerances.
Designed to protect carbon saddle rails
The wider saddle-clamp contact area spreads the clamping load across more of the rail, helping reduce concentrated stress on lightweight carbon saddle rails.
Frequently asked questions
Does this seatpost fit the Specialized Shiv TT?
Yes. It is specifically designed for the Specialized S-Works Shiv TT 2025.
Does it also fit the Specialized Venge?
Yes. Alpitude lists compatibility with the Specialized Venge Disc from model years 2019 to 2021.
Will it fit an Allez Sprint?
It is compatible with the Specialized Allez Sprint from model years 2019 to 2021. It is not listed for later-generation Allez Sprint frames.
What does the +15mm offset do?
The +15mm offset moves the saddle-clamp position forward, supporting the aggressive forward riding position commonly used for time trial and triathlon setups.
Which seatpost length should I order?
Choose from 250, 300, 350 or 400mm according to your current saddle height and required insertion depth. Compare the usable length of your existing post before ordering.
Can it be used with carbon saddle rails?
Yes. The clamp has a wider contact surface designed to distribute pressure more evenly across carbon saddle rails. Always follow the maximum 4Nm saddle-clamp torque.
How long will delivery take?
This is a custom order handmade by Alpitude in Italy. Estimated shipping time is approximately two working weeks before dispatch to Australia.
Give your Specialized aero bike the lightweight carbon seatpost it deserves. Select your length and carbon finish to order your Tonale.