
Specialized Roval Alpinist Seatpost Rail Clamp Hardware Kit
Specialized Roval Alpinist Seatpost Rail Clamp Hardware Kit
Stage 21 Bikes
23582 Moulton Parkway
#111
Laguna Woods CA 92637
United States
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Specialized Factory Replacement Saddle Rail Clamp & Hardware Kit – Roval Alpinist Seatpost
This Specialized factory replacement saddle rail clamp and hardware kit is designed for the Roval Alpinist seatpost system. It includes all necessary clamps, barrel nuts, and titanium bolts to securely mount saddles with different rail standards while maintaining lightweight performance and precise adjustability.
Kit Contents
Rail Clamps
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Upper rail clamp
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Lower rail clamp
Barrel Nuts
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Threaded barrel nut: M5 × 0.8 (1 pc.)
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Threaded barrel nut: M6 × 1.0 (1 pc.)
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Unthreaded barrel nut: M5 × 0.8 (1 pc.)
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Unthreaded barrel nut: M6 × 1.0 (1 pc.)
Bolts
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Titanium bolt: M6 × 1.0 × 30mm (1 pc.)
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Titanium bolt: M5 × 0.8 × 30mm (1 pc.)
Features
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OEM-correct replacement for Roval Alpinist seatposts
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Supports multiple saddle rail standards (round & oversized)
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Titanium hardware reduces weight and resists corrosion
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Precision-machined clamps for secure, creak-free fit
OEM Compatibility (Grouped)Roval Seatposts
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2027 Roval Control SL Seatpost
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2027 Roval Alpinist Seatpost
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2023 S-Works Tarmac SL8 Carbon Seatpost
Tarmac SL8
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Tarmac SL8 (Comp, Expert, Pro, Framesets) – 2024–2026
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S-Works Tarmac SL8 (All LTD, Team, Frameset & Complete models) – 2024–2026
Aethos
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Aethos (Comp, Expert, Pro, Framesets) – 2021–2026
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S-Works Aethos (All variants & framesets) – 2021–2026
Crux
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Crux (Comp, Expert, Pro, Framesets) – 2022–2026
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S-Works Crux (All variants & framesets) – 2022–2026
Epic World Cup
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Epic World Cup (Expert, Pro, S-Works & Framesets) – 2023–2026
Installation Notes
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Torque bolts evenly to manufacturer saddle rail specifications
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Use correct bolt size for saddle rail type
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Always use a calibrated torque wrench
A genuine Specialized OEM clamp and hardware solution, ensuring lightweight performance, secure saddle fitment, and full compatibility with Roval Alpinist seatpost systems.


