Specialized S-Works Tarmac SL8 Carbon Seatpost 380x15 Offset
Specialized S-Works Tarmac SL8 Carbon Seatpost 380x15 Offset
Stage 21 Bikes
23582 Moulton Parkway
#111
Laguna Woods CA 92637
United States
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Specialized S-Works Tarmac SL8 Carbon Seatpost - 380mm X 15mm Offset
FACT Carbon | Aero Design | 0mm / 15mm Offset Options
The Specialized S-Works Tarmac SL8 Carbon Seatpost is a precision-engineered OEM replacement designed to deliver aerodynamics, lightweight performance, and precise fit for the latest Tarmac SL8 platform. Built from FACT carbon, it integrates seamlessly into the frame while offering flexible setback options to dial in rider position.
Next-gen aero. Perfect fit.
Designed for Tarmac SL8
- Compatible with 2024+ Specialized Tarmac SL8
- OEM replacement for exact fit and performance
- Maintains full aerodynamic integration
FACT Carbon Construction
- Premium FACT carbon fiber
- Lightweight, stiff, and durable
- Built for elite road performance
Aero Integrated Profile
- Aerodynamic shaping to match SL8 frame design
- Reduces drag while maintaining compliance
- Clean, race-ready aesthetic
Two Setback Options15mm Offset Version
- 2-bolt micro-adjust clamp
- 46mm rail cradle
- Adjustable effective offset from 0–15mm
- Ideal for fine-tuned fit adjustments
0mm Offset Version
- Single-bolt cylindrical clamp system
- Simple and secure saddle positioning
- Lightweight and easy to adjust
Available Sizes
- 300mm x 0mm offset
- 300mm x 15mm offset
- 380mm x 0mm offset
- 380mm x 15mm offset
Specifications
- Brand: Specialized
- Model: S-Works Tarmac SL8 Seatpost
- Material: FACT Carbon
- Setback Options: 0mm / 15mm
- Lengths: 300mm / 380mm
-
Clamp Type:
- 0mm: Single-bolt
- 15mm: 2-bolt micro-adjust
- Compatibility: Tarmac SL8 (2024+)
Ideal For
✔ Tarmac SL8 owners
✔ Riders dialing in precise fit
✔ Aero road builds
✔ Replacing damaged or worn seatposts
Why Choose S-Works SL8 Seatpost?
• OEM-perfect fit for Tarmac SL8
• Lightweight FACT carbon construction
• Aero-optimized design
• Multiple sizing and setback options
• Advanced clamp systems for precise adjustment
The Specialized S-Works Tarmac SL8 Carbon Seatpost delivers elite-level fit, aerodynamics, and performance—making it the ideal choice for modern race bike builds.