• REDSHIFT dual-position seatpost, black/red — product view on a white background
1 5
REDSHIFT

REDSHIFT Dual-Position Seatpost Black/Red

The REDSHIFT dual-position seatpost lets you quickly switch between a road position and an aerodynamic position on a standard road bike. Its patented Dual-Position... Read more
249,90 €
249,90 €
View full details

Description

The REDSHIFT dual-position seatpost lets you quickly switch between a road position and an aerodynamic position on a standard road bike. Its patented Dual-Position Quick Adjust mechanism moves the saddle 50 mm forwards, allowing you to adopt a position better suited to long, fast stretches or time trials without changing your usual bike setup.

Thanks to its articulated linkage system, you can easily change position while riding. This design maintains consistent leg extension in both configurations and changes the effective seat tube angle by around 3 to 4 degrees. The road position is retained for climbs and descents, while the forward position encourages a more aerodynamic posture on the flat.

Made from 6061-T6 aluminium with 7075-T6 aluminium linkages and clamps, this seatpost prioritises stiffness, reliability and durability. Its two-bolt clamp allows precise adjustment of the saddle angle and holds the rails securely during demanding rides.

Compatible with saddles fitted with 7 mm round rails, the REDSHIFT dual-position seatpost is a practical way to turn a road bike into a versatile machine, switching effectively between comfort, efficiency and aerodynamic performance without changing bikes.

Technical information

Use: Road, triathlon, time trial
Technology: Dual-Position Quick Adjust
Position change: While riding
Saddle displacement: 50 mm
Effective seat tube angle modification: Approximately 3 to 4°
Setback in road position: 16 mm
Forward reach in aerodynamic position: 34 mm
Diameter: 27.2 mm
Length: 350 mm
Weight: 400 g
Tube material: 6061-T6 aluminium
Links and carriage: 7075-T6 aluminium
Saddle carriage: Double bolt with continuous tilt adjustment
Saddle rail compatibility: 7 mm round rails
Minimum insertion: 75 mm
Maximum user load: 115 kg
Intended use: ASTM F2043 Class 1 (Road only)

Frequently asked questions

Could the saddle tilt accidentally while riding?

No. The mechanism has a very secure mechanical lock. To change position, simply take a little weight off the saddle and push or pull it.

Can it be fitted to a 30.9 mm or 31.6 mm frame?

Yes, the seatpost has a standard 27.2 mm diameter. Simply use a dedicated seatpost shim (Redshift Seatpost Shim) to fit it to frames with wider seat tubes.

Is it compatible with clip-on aerobars?

They’re the ideal pairing! Used with Redshift Quick-Release Aerobars, it lets you turn a standard road bike into a true triathlon bike in seconds.

;

Price information

*Recommended retail price from supplier in July 2026