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

✅ Your Benefits at a Glance

• Combines Comfort & Performance: Dropper seatpost with 80 mm travel – perfect for changing terrain
• 40 mm Air Suspension: Noticeable cushioning against impacts and vibrations
• Safety Level 6: Maximum safety, even for E-Bikes, Speed Pedelecs & heavier 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 at a moderate weight
• Sleek Black Appearance: Matches any bike and style

Technical Specifications Overview

• 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)
• like riding on 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 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 can also be done 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 during fast descents. Especially on E-Bikes and cargo bikes, they significantly enhance 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 suspension adjustable seatpost

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Downloads as PDF

• Safety-Level Overview
• Installation Instructions

FAQs

Is self-installation possible?
Yes, installation is also feasible with some technical skill. An instruction manual is included with the delivery, and many videos show step by step how it works. Important: The cable routing is internal; the frame must be prepared for this. If unsure, we recommend installation by a specialized 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 weight limit for using this seatpost?
It is suitable for riders starting from 60 kg and up to 120 kg. More details can be found in the overview of Safety Levels.

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

How is the saddle height adjusted?
The height adjustment is done via a remote lever on the handlebar – quick, precise, and easy to operate while riding.