Seatpost Atran Velo TOUR 365 BS aluminum, AVS system, fits 25–36 mm seats, black

Atran Velo TOUR 365 BS aluminum seatpost with the AVS system is engineered to provide a durable and lightweight solution for saddle mounting on touring and everyday bicycles. Finished in black, the seatpost accepts saddle clamp diameters from 25 to 36 mm and is made from corrosion-resistant aluminum for reliable performance across varied riding conditions. The design focuses on simple adjustability and secure attachment to ensure consistent saddle positioning during long rides and daily use.

Advantages

The aluminum construction offers a balance of low weight and resistance to corrosion, while the AVS mounting system enables compatibility with a wide range of saddle clamp sizes. Its black finish provides a neutral look that integrates with most frame designs. The seatpost is machined for consistent fit and stable saddle alignment, reducing the need for frequent readjustment and improving rider comfort and confidence.

Suitable for

• Touring bicycles where durability and reliable saddle attachment are required
• Commuter and everyday bikes needing a stable, adjustable seatpost
• Replacement of worn or mismatched seatposts with a compatible clamp diameter
• Riders seeking a corrosion-resistant, lightweight aluminum option

Key specifications

• Material: aluminum
• Mounting system: AVS saddle clamp system
• Compatible saddle clamp diameter range: 25–36 mm
• Finish: black
• Application: touring and everyday bicycles

How to use

Insert the seatpost into the bicycle frame's seat tube to the recommended insertion depth and secure the seatpost clamp according to the frame manufacturer's torque specification. Fit the saddle rails into the AVS clamp and adjust fore-aft position and tilt to achieve the desired riding posture. Tighten the AVS clamp bolts incrementally and verify that the saddle is firmly fixed and correctly aligned before riding. Recheck bolt tightness after initial use and periodically as part of regular maintenance.

Usage recommendations

For long-term performance, apply a thin layer of appropriate anti-seize or assembly paste on metal-to-metal contact surfaces if recommended by your bicycle manufacturer, and use a torque wrench to avoid over-tightening the clamp bolts. Inspect the seatpost and clamp for signs of wear, corrosion, or slippage regularly, and replace if any structural damage is visible.