Cervelo S5 Seatpost Yoke 21.4 g vs Stock 61.8 g (40.4 g Saved)

The Cervelo S5 seatpost yoke — the saddle rail clamp assembly under the seatpost head — weighs 61.8 g in stock form. TiNE's titanium yoke set for Cervelo S5 drops that to 21.4 g, saving 40.4 g at the highest point on the frame.

40.4 g removed from the saddle — that is roughly the weight of a full water bottle mount bracket. The seatpost yoke sits at the highest point on the bike, directly under the saddle rails, where every gram has disproportionate impact on how the frame feels when carried, climbed out of the saddle, or accelerated.

The Cervelo S5 uses an integrated alloy seatpost yoke that combines the saddle rail cradle, base plate, and clamping hardware. At 61.8 g, it is one of the heavier yoke assemblies in the aero-road category — heavier than Pinarello's stock yoke at 54.4~60 g, though lighter than Colnago's 83.1 g unit. This makes the Cervelo S5 yoke a strong candidate for a titanium upgrade, with 40.4 g of removable weight.

What the TiNE Cervelo S5 Yoke Set Includes

The TiNE yoke set replaces the entire stock clamp assembly under the seatpost head with three components:

2 titanium screws — Grade 5 Ti-6Al-4V, CNC-machined, handling saddle rail clamping force.

1 carbon fiber base plate — replaces the heavy alloy casting, lighter and structurally stiff.

2 7075 aluminum yoke arms — CNC-shaped to match Cervelo S5 seatpost head geometry.

The titanium screws resist corrosion better than stock steel bolts in the saddle zone — a high-splash area exposed to sweat and road spray on every ride. The carbon base and 7075 aluminum arms are specific to the Cervelo S5 seatpost head profile, not shared with other TiNE yoke versions.

Cervelo S5 Model Compatibility

The TiNE Cervelo S5 yoke set fits:

Cervelo S5 (2020-2025 models using the 61.8 g stock yoke) — TiNE saves 40.4 g.

The Cervelo S5 went through several seatpost revisions across generations. The TiNE yoke set is designed for S5 models that use the 61.8 g stock yoke assembly. Confirm your stock yoke weight before ordering — earlier or later Cervelo S5 revisions may use a different clamp design.

TiNE Yoke Sets — Weight Comparison

For reference, all eight TiNE yoke versions ranked by savings:

The Cervelo S5 yoke sits in the upper-middle range of TiNE yoke savings — less than Colnago's 62.8 g or the Y1RS/V5RS at 45.2 g, but more than Pinarello's 32.3~37.9 g. For Cervelo S5 riders, the seatpost yoke swap removes meaningful weight from the highest point on the frame, where the impact on handling feel is most noticeable.