Ergotec Viper Up and Down S – Your Comfort Weapon for E-Trekking & E-MTB

Do you want full control, maximum comfort, and top performance on any terrain? Then the Ergotec Viper Up and Down S is exactly the seatpost for you! Whether steep climbs, fast descents, or bumpy trails – with this combination of dropper post and integrated suspension, you are equipped for anything. Designed for demanding riders on E-Trekking and E-Mountain bikes, it delivers the perfect mix of comfort, dynamism, and stability.

✅ Your Advantages at a Glance

• Combines Comfort & Performance: Dropper seatpost with 80 mm travel – perfect for changing terrain
• 40 mm Air Suspension: Noticeable damping for impacts and vibrations
• Safety Level 6: Maximum safety, also for E-Bikes, Speed Pedelecs & heavy riders
• Remote Control: Convenient handlebar control for lowering while riding
• Internal Cable Routing: Clean, quiet, protected – ideal for modern frames
• Robust AL6066 T6 Aluminum: High strength with moderate weight
• Sleek Appearance in Black: Matches any bike and style

Technical Data at a Glance

• Material: Aluminum AL 6066 T6
• Diameter: 30.9, 31.6 or 34.9 mm
• Length: 397 mm
• Stack Height: 80 mm
• Offset: 0 mm
• Spring System: Air
• Spring Travel: 40 mm
• Height Adjustment: 80 mm (via Remote)
• Rider Weight: from 60 kg to 140 kg
• Weight: approx. 695 g (30.9 mm) / 705 g (31.6 mm) / 723 g (34.9 mm)
• Surface: Black
• Safety Level: 6 (E-Bike and S-Pedelec ready)

Who is the Viper Up and Down S Made For?

The Viper Up and Down S is ideal for you if you:

• are riding an E-Trekking bike or E-MTB (also up to 45 km/h)
• enjoy changing terrain and want to adjust flexibly
• are looking for more control and comfort
• want to keep your bike clean and modern

Compatibility & Installation

The Viper fits in all frames with a seat tube diameter of 30.9, 31.6, or 34.9 mm. The internal routing of the remote cable is compatible with most modern frames. Installation is also possible by yourself, see FAQ.

Why a Combined Dropper Suspension Seatpost?

Combined seatposts with lowering function and suspension offer the best of both worlds: comfort on uneven terrain and safety on fast descents. Especially on E-Bikes and cargo bikes, they significantly improve riding stability, body control, and seating comfort. The Ergotec Viper Up and Down S is among the most advanced options on the market.

Scope of Delivery

1 x Ergotec Viper Up and Down S suspended adjustable seatpost

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Downloads as PDF

• Safety Level Overview
• Installation Instructions

FAQs

Can I install it myself?
Yes, with some technical skill, installation is manageable yourself. A guide is included with the delivery, and many videos show step by step how to do it. Important: The cable routing is internal, the frame must be prepared for this. If unsure, we recommend having it installed by a specialist dealer.

Is the seatpost suitable for my E-Bike?
Yes, thanks to Safety Level 6, the Viper Up and Down S is specifically designed for E-Bikes, fast E-Bikes, and high loads.

What is the maximum weight for using this seatpost?
It is suitable for riders from 60 kg up to 120 kg. More details can be found in the Safety Level overview.

Do I need to maintain the air suspension?
The air suspension is low maintenance. Regular cleaning and occasional re-inflation in case of air loss are usually sufficient.

How is the seat height adjusted?
Height adjustment is done via a remote lever on the handlebar – quick, precise, and easily operable while riding.