34.9 and 31.8 seatpost clamp sizes
Choose by your seat post diameter: the 31.8 mm clamp for 27.2–28.6 mm posts and the 34.9 mm clamp for 30.8–31.6 mm posts.
Quick Release Seatpost Clamp 31.8 / 34.9mm Aluminum 7075 36.5g
The IMPALAPRO quick release seatpost clamp is a 36.5 g bike seat clamp in anodized 7075 CNC aluminum. An ergonomic extra-long lever and rotary lock let you set saddle height without tools and hold the seat post firmly.
Specifications
- MATERIAL
- Anodized 7075 CNC aluminum
- CLAMP SIZES
- Ø31.8 mm or Ø34.9 mm
- SEAT POST (Ø31.8)
- 27.2–28.6 mm
- SEAT POST (Ø34.9)
- 30.8–31.6 mm
- WEIGHT
- 36.5 g
- SYSTEM
- Extra-long lever + rotary lock
- FITTING
- Tool-free
- TORQUE
- 4–6 Nm
- BIKES
- Mountain, road, city, folding, e-bike
- INCLUDES
- Clamp + biodegradable wipe
- COLORS
- 5 on amazon.com
Frequently asked questions
It depends on your seat post diameter. From 27.2 to 28.6 mm: the 31.8 mm clamp. From 30.8 to 31.6 mm: the 34.9 mm clamp. Not recommended for seat posts under 27.2 mm.
No. You swap it by hand in under 5 minutes. Clean the seat post and frame, apply a thin layer of grease (for a carbon seat post, follow the manufacturer's instructions), position the clamp with the IMPALA logo readable and close the lever.
Adjust the thread for a firm 4–6 Nm hold. If the lever is too stiff to close, back the thread off slightly. Then push the saddle down: if it moves, open, adjust and close again.
Yes, as long as your seat post is within the sizes. It suits mountain, road, city, folding and electric bikes.
36.5 g. CNC-machined 7075 aluminum with a hollow design and an anodized finish against rust and corrosion.
Clean it now and then with a soft cloth, water and a little mild soap. Apply a thin layer of grease to the seat post every 3–6 months. Replace it if the lever gets hard to close, loses its grip, or you see deformation or a damaged thread.
Complete your machine.
Engineering designed to work together.
