PRO PLT Alloy Road Seatpost - 31.6 mm x 400 mm Offset Black

The PRO PLT Seatpost is a robust and reliable alloy road seatpost, constructed from 3D forged AL-7...

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Tweeks CyclesPRO PLT Alloy Seatpost - 20mm Layback
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Cycles U.K.PRO PLT Alloy Road Seatpost 27.2 mm x 400 mm In-line Black - Cycles UK
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Product Information

Full details

The PRO PLT Alloy Road Seatpost is designed for cyclists seeking a durable and adjustable seatpost for their road bike. Its primary benefit is the reliable 3D forged AL-7050 alloy construction offering stability and longevity, with a key caveat being the specific clamp system which may require a slight learning curve for initial saddle installation. This seatpost offers a 400mm length, choice of 27.2mm or 31.6mm diameters, and 0 or 20mm offset options, featuring a single-bolt clamp for easy angle adjustments and compatibility with Shimano Di2 battery integration.

All features

Model Part NumberPRSSP0287
BrandPRO

Extended Product Information

FAQs

What is the minimum insertion length for this seatpost?

While specific minimum insertion lines are marked on the seatpost, always ensure it is inserted sufficiently into the frame to maintain structural integrity and safety, typically at least 70-100mm depending on frame design.

Can I use this seatpost with a carbon saddle?

Yes, this seatpost is compatible with most metal saddle rails. For carbon saddle rails, it is crucial to ensure your saddle manufacturer approves their use with this type of clamp and to use a carbon-specific assembly paste to prevent over-tightening and damage.

How do I determine the correct diameter for my bike?

The correct diameter is determined by your bicycle frame's seat tube. You can usually find this information by checking your bike's specifications, measuring your existing seatpost, or consulting your bike manufacturer.

What is the advantage of the 1-bolt clamping system?

The 1-bolt system allows for quick and simple adjustment of the saddle angle. It often provides a cleaner aesthetic and can be easier to adjust for fine-tuning saddle tilt compared to some dual-bolt systems.

Does the offset affect saddle height?

The offset primarily affects the fore-aft position of the saddle relative to the seat tube. While it doesn't directly change the absolute saddle height, it influences how far back or forward your saddle can be positioned, which can indirectly impact perceived height relative to the pedals.

How do I install the Shimano Di2 battery?

The Di2 battery is typically housed in a dedicated bay within the seatpost. Follow the specific instructions provided by Shimano for your Di2 system, which usually involves sliding the battery into place and securing it.

Troubleshooting

Saddle slips after tightening

Ensure the saddle rails are correctly seated in the clamp. Verify that the clamp bolt is tightened to the manufacturer's recommended torque specification. If using carbon rails, ensure compatibility and use appropriate carbon assembly paste.

Seatpost creaks or makes noise

Remove the seatpost, clean the inside of the seat tube and the seatpost itself. Reapply a thin layer of grease (for alloy frames/rails) or carbon paste (for carbon frames/rails). Ensure the seatpost clamp on the frame is tightened correctly.

Difficulty adjusting saddle angle

Loosen the clamp bolt slightly, make the adjustment, and then retighten evenly. Ensure there is no debris hindering the clamp mechanism.

Di2 battery not detected

Confirm the battery is correctly seated within the seatpost and the connection is secure. Refer to Shimano's Di2 setup guide for troubleshooting.

Pros and Cons

Pros

  • Durable and reliable AL-7050 alloy construction.
  • Versatile with multiple diameter and offset options.
  • Easy saddle angle adjustment with the 1-bolt clamp.
  • Integrated compatibility with Shimano Di2 batteries.
  • Good length for varied rider fit needs.

Cons

  • The 1-bolt clamp may require precise adjustment for optimal saddle security.
  • Specific clamp mechanism might be less intuitive for first-time users compared to dual-bolt systems.
  • Minimum weight quoted is for the 27.2mm variant; larger diameters may be heavier.
  • Offset options limit the potential for extreme setback adjustments for some riders.

Setup, Compatibility & Care

Setup:

  1. Ensure the seatpost diameter matches your bicycle frame's seat tube.
  2. Apply a thin layer of carbon paste (if using carbon rails) or grease (if using alloy rails) to the inside of the seat tube and the outside of the seatpost to prevent seizing.
  3. Insert the seatpost into the frame to your desired height, respecting the minimum insertion line.
  4. Install your saddle onto the 1-bolt clamp mechanism, ensuring the rails are properly seated. Tighten the bolt gradually and evenly to secure the saddle angle and position. Refer to the specific torque settings recommended by PRO for your saddle and the seatpost.
  5. If integrating a Shimano Di2 battery, follow Shimano's instructions for proper installation into the designated cavity.

Compatibility:

  • Compatible with standard 7mm or 8mm metal saddle rails. For carbon rails, ensure your saddle manufacturer approves.
  • Available in 27.2mm and 31.6mm diameters.
  • Compatible with frames designed for 0mm or 20mm seatpost offset.
  • Designed for Shimano Di2 battery integration.

Care:

  • Regularly clean the seatpost with mild soap and water. Avoid abrasive cleaners.
  • Periodically check the clamp mechanism and saddle rail bolts for tightness.
  • Reapply grease or carbon paste annually or as needed to prevent seizing.

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