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 perfect seat post for you! Whether tackling steep climbs, speeding down hills, or navigating bumpy trails – this combination of a dropper post and integrated suspension prepares you for everything. Designed for demanding cyclists on E-Trekking and E-Mountain bikes, it offers the ideal mix of comfort, dynamics, and stability. ✅ Your Advantages at a Glance

• Combines Comfort & Performance: Dropper seat post with 80 mm travel – perfect for changing terrain
• 40 mm Air Suspension: Noticeable cushioning against bumps and vibrations
• Safety Level 6: Maximum safety, including for E-bikes, speed pedelecs & heavier riders
• Remote Control: Convenient handlebar control for lowering the seat while riding
• Internal Cable Routing: Clean, quiet, protected – ideal for modern frames
• Robust AL6066 T6 Aluminum: High strength at a moderate weight
• Sleek Black Design: 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
• Travel: 80 mm
• Offset: 0 mm
• Spring System: Air
• Spring Travel: 40 mm
• Height Adjustment: 80 mm (via remote)
• Rider Weight: from 60 kg up 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 Designed For? The Viper Up and Down S is perfect for you if you:

• ride an E-Trekking bike or E-MTB (even up to 45 km/h)
• enjoy switching terrains and want to adapt flexibly
• are seeking 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. Why a Combined Dropper Suspension Seat Post? Combined seat posts with dropper function and suspension offer the best of both worlds: comfort on uneven terrain and safety during fast descents. Especially on E-bikes and cargo bicycles, they significantly enhance riding stability, body control, and seat comfort. The Ergotec Viper Up and Down S is among the most advanced options available on the market. Scope of Delivery 1 x Ergotec Viper Up and Down S suspension seat post

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FAQs Is self-installation possible?
Yes, with some technical skill, installation is feasible on your own. An instruction manual is included, and many videos provide step-by-step guidance. Important: The cable routing is internal, so the frame must be prepared for this. If uncertain, we recommend installation through a specialist dealer. Is the seat post 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 this seat post?
It is suitable for riders starting at 60 kg and up to a maximum of 120 kg. More precise 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-pumping if air loss occurs are usually sufficient. How is the saddle height adjusted?
The height adjustment is done via a remote lever on the handlebars – quick, precise, and easy to operate while riding.