Specialized S-Works Tarmac SL8 Carbon Seatpost FACT Aero OEM
Specialized S-Works Tarmac SL8 Carbon Seatpost FACT Aero OEM
Stage 21 Bikes
23582 Moulton Parkway
#111
Laguna Woods CA 92637
United States
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Specialized S-Works Tarmac SL8 Carbon Seatpost
FACT Carbon Construction | OEM Replacement Seatpost
The Specialized S-Works Tarmac SL8 Carbon Seatpost is a genuine factory replacement designed specifically for the Tarmac SL8 platform. Constructed from premium FACT carbon fiber and featuring an aerodynamic profile, this seatpost delivers the lightweight performance, stiffness, and compliance expected from Specialized's flagship road racing bike.
Available with 0mm or 20mm setback options, riders can fine-tune saddle position to achieve their ideal fit and maximize comfort and efficiency.
Genuine Specialized OEM Replacement
- Original Specialized factory replacement seatpost
- Designed specifically for the Tarmac SL8 platform
- Maintains factory fit, aerodynamics, and ride quality
FACT Carbon Construction
- Lightweight FACT carbon fiber construction
- Optimized balance of stiffness, strength, and comfort
- Aerodynamic profile complements the Tarmac SL8 frame design
Available Setback Options
0mm Offset Version
- Cylindrical aluminum head assembly
- Easy-access single-bolt adjustment
- Allows quick fore-aft and saddle tilt adjustments
- Ideal for riders requiring a more forward saddle position
20mm Offset Version
- Two-bolt micro-adjust clamp design
- 46mm saddle rail cradle
- Effective offset adjustment range from 0mm to 15mm
- Provides additional fit flexibility and saddle positioning options
Precision Saddle Adjustment
- Secure saddle clamping system
- Easy adjustment for optimal fit
- Designed for high-performance road riding and racing
Aerodynamic Integration
- Aero-profile design developed for the Tarmac SL8
- Seamlessly integrates with the frame's aerodynamic shaping
- Helps preserve the bike's race-proven performance characteristics
Specifications
- Brand: Specialized
- Model: S-Works Tarmac SL8 Seatpost
- Material: FACT Carbon Fiber
- Compatibility: Specialized S-Works Tarmac SL8
- Offset Options: 0mm or 20mm
- Seatpost Head: Single-Bolt (0mm) / Two-Bolt Micro-Adjust (20mm)
- Application: Road Racing & Performance Riding
- OEM Replacement: Yes
- MPN: 28123-4115
Compatibility
Compatible with:
Specialized S-Works Tarmac SL8
- Factory replacement seatpost
- Designed specifically for the Tarmac SL8 frame platform
Ideal For
✔ Replacing damaged seatposts
✔ Tarmac SL8 frame builds
✔ Race bike maintenance
✔ Aero road bike upgrades
✔ Riders optimizing saddle fit and positioning
Why Choose Genuine Specialized Parts?
• Exact OEM fit and compatibility
• Lightweight FACT carbon construction
• Aerodynamic profile optimized for Tarmac SL8
• Available in multiple setback options
• Designed for elite-level road performance
The Specialized S-Works Tarmac SL8 Carbon Seatpost delivers the lightweight performance, aerodynamic efficiency, and fit adjustability required for riders seeking the ultimate road racing experience on the Tarmac SL8 platform.