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 the right seatpost for you! Whether steep climbs, fast descents, or bumpy trails – with this combination of a dropper post and integrated suspension, you are equipped for everything. Designed for demanding riders on E-Trekking and E-Mountain bikes, it provides the perfect blend of comfort, dynamics, and stability.

✅ Your Advantages at a Glance

• Combines Comfort & Performance: Adjustable seatpost with 80 mm travel – perfect for changing terrain
• 40 mm Air Suspension: Noticeable damping with 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: Neat, quiet, protected – ideal for modern frames
• Robust AL6066 T6 Aluminum: High strength at moderate weight
• Simple Look in Black: Matches any bike and style

Technical Specifications at a Glance

• Material: Aluminum AL 6066 T6
• Diameter: 30.9, 31.6, or 34.9 mm
• Length: 397 mm
• Build 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 (up to 45 km/h)
• enjoy riding changing terrain and want to adapt flexibly
• are looking for more control and more comfort
• want to keep your bike clean and modern

Compatibility & Installation

The Viper fits into all frames with a seat tube diameter of 30.9, 31.6, or 34.9 mm. 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 at high speeds. Especially on e-bikes and cargo bikes, they significantly increase ride 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

---

Downloads as PDF

• Safety Level Overview
• Assembly Instructions

FAQs

Is self-installation possible?
Yes, installation is feasible with some technical skill. An instruction manual is included in 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 installing through 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 heavy loads.

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

Does the air spring require maintenance?
The air spring is low maintenance. Regular cleaning and occasional re-inflation in case of air loss are usually sufficient.

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