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 everything. Designed for demanding riders on E-Trekking and E-Mountain bikes, it delivers the perfect mix of comfort, dynamics, 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 from impacts and vibrations
• Safety Level 6: Maximum safety, even for E-Bikes, speed pedelecs & heavy riders
• Remote Control: Comfortable handlebar control for lowering while riding
• Internal Cable Routing: Clean, quiet, protected – ideal for modern frames
• Robust AL6066 T6 Aluminum: High strength at moderate weight
• Sleek Look in Black: Matches any bike and style

Technical Data Overview

• 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: 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 on changing terrain and want to adapt flexibly
• are looking for more control and 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 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 during fast descents. Especially on E-Bikes and cargo bikes, they significantly increase riding stability, body control, and seating comfort. The Ergotec Viper Up and Down S is one of 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

Can I install it myself?
Yes, with some technical skill, installation is feasible by yourself. A manual is included with the delivery, and many videos show step-by-step how to do it. Important: The cable routing must be internal, and the frame needs to be prepared for it. If in doubt, we recommend installation by a professional 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 max 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 when losing air is usually sufficient.

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