V5RS Titanium Saddle Rail Clamp 20.8g Saves 45g FAQ

The V5RS saddle rail clamp assembly sits under the saddle, holding the rails to the seatpost. It is a component most riders never think about — until they pick up the stock assembly and realize it weighs 66g. The TiNE titanium version drops that to 20.8g, a saving of 45.2g.

Here are the questions riders ask most often about the V5RS titanium saddle rail clamp.

What is a saddle rail clamp, and why does it weigh so much?

The saddle rail clamp is the assembly that connects the saddle rails to the seatpost head. On the V5RS, it consists of two clamp plates, two bolts, and a carbon fiber base. The stock version uses steel bolts and a heavier base design, pushing the total to 66g. For a component that sits high on the bike — where weight matters most for ride feel — this is significant.

How does the TiNE version save 45g?

The TiNE assembly replaces the steel bolts with titanium equivalents and uses a carbon fiber base with 7075 aluminum clamp plates. The titanium bolts alone account for meaningful weight savings, while the carbon base and aluminum clamps reduce the remainder. The result: 20.8g total, down from 66g — a 68% reduction.

Is this the same as the Y1RS version?

The TiNE V5RS and Y1RS saddle rail clamps share the same weight (20.8g) and the same material composition: 2 titanium bolts, carbon fiber base, 2 x 7075 aluminum clamp plates. The difference is in the mounting geometry — each is designed to fit the specific seatpost head of its respective frame. They are not interchangeable.

Does this affect saddle angle adjustment?

No. The TiNE clamp provides the same range of saddle angle adjustment as the stock assembly. The clamp plates grip the rails in the same way, and the titanium bolts are torqued to the same specification. The only difference is the material and the weight.

Why is this upgrade worth considering?

Forty-five grams is a meaningful saving from a single component. For context, that is roughly the weight of a CO2 cartridge and inflator head. The saddle area is one of the highest points on the bike — reducing weight here lowers the center of gravity and reduces the pendulum effect during hard cornering. Combined with other TiNE upgrades (expander bolt kit, frame bolt kit, groupset bolts), the V5RS rider can achieve substantial weight reductions from components that are invisible once installed.