Product Description
Ergotec PM-705N – Comfort on Any Surface
You want more comfort on your bike—without compromising stability and control? Then the ergotec PM-705N is the perfect suspension seat post for you! With its sophisticated parallelogram system and a travel of 27 mm, it provides smooth cushioning over every pothole, curb, and cobblestone.
The PM-705N is robust, lightweight, suitable for everyday use and touring—and noticeably elevates your riding comfort!
Your Benefits at a Glance
❓ Frequently Asked Questions (FAQ) 1. Can I install the seat post myself?
Yes, installation is straightforward if you have some handy skills. You can find all the information in the installation manual.
Tip: Ensure a clean and lubricated clamp connection during installation to avoid cracking noises.
WARNING – Special conditions and prerequisites apply for installation on an S-Pedelec. We strongly recommend having the conversion to a fast e-bike done by a professional workshop! 2. Is the post suitable for e-bikes?
Yes, the PM-705N has Safety Level 5 and is approved for e-bikes up to 25 km/h as well as for fast e-bikes up to 45 km/h (with a maximum total weight of 120 kg) for city, trekking, travel, and cargo use. 3. Can I also use it for a fast e-bike (S-Pedelec)?
Yes, Safety Level 5 is approved for S-Pedelecs (up to 45 km/h), but only up to a maximum total weight of 120 kg. However, due to the significant load, we recommend choosing a seat post with Safety Level 6 or 6+ from Ergotec. 4. Are there springs for other rider weights?
Yes, Ergotec offers suitable replacement springs for other weight classes. Feel free to contact us if you need a different tune. 5. Does the seat post fit my bike?
The PM-705N is suitable for seat tube angles greater than 70° and saddle rails with a diameter of 7 mm, which applies to most bikes. Just select the appropriate tube diameter (27.2 / 30.9 / 31.6 mm).
- ✅ Parallelogram Suspension System for particularly sensitive, uniform damping
- ✅ Rebound Suspension for smooth return without bouncing
- ✅ Low Breakaway Torque – reacts quickly and softly
- ✅ Optimized for Rider Weights of 70–90 kg (other springs available optionally)
- ✅ Safety Level 5 – suitable for city, trekking, travel, and cargo e-bikes up to 25 km/h or 45 km/h (with a maximum total weight of 120 kg)
- ✅ High-Quality AL 7075 T6 Aluminum – lightweight, stable, durable
- ✅ 30–60 mm Offset – for an optimized seating position
- ✅ Compatible with Seat Tube Angles > 70° and standard saddle rails (7 mm) – common sizes for most bikes
- ✅ Modern Design with sandblasted surface in black
- Material: Aluminum AL 7075 T6
- Diameter: 27.2 mm / 30.9 mm / 31.6 mm
- Length: 350 mm
- Installation Height: 111 mm
- Offset: 30–60 mm
- Spring System: Rebound
- Travel: 27 mm
- Rider Weight: 70–90 kg
- Weight: approx. 590 g (27.2 mm) / 610 g (30.9 mm) / 630 g (31.6 mm)
- Surface: black sandblasted
- Rail Diameter: 7 mm
- Safety Level: 5
- 1x Ergotec PM-705N Suspension Seat Post
❓ Frequently Asked Questions (FAQ) 1. Can I install the seat post myself?
Yes, installation is straightforward if you have some handy skills. You can find all the information in the installation manual.
Tip: Ensure a clean and lubricated clamp connection during installation to avoid cracking noises.
WARNING – Special conditions and prerequisites apply for installation on an S-Pedelec. We strongly recommend having the conversion to a fast e-bike done by a professional workshop! 2. Is the post suitable for e-bikes?
Yes, the PM-705N has Safety Level 5 and is approved for e-bikes up to 25 km/h as well as for fast e-bikes up to 45 km/h (with a maximum total weight of 120 kg) for city, trekking, travel, and cargo use. 3. Can I also use it for a fast e-bike (S-Pedelec)?
Yes, Safety Level 5 is approved for S-Pedelecs (up to 45 km/h), but only up to a maximum total weight of 120 kg. However, due to the significant load, we recommend choosing a seat post with Safety Level 6 or 6+ from Ergotec. 4. Are there springs for other rider weights?
Yes, Ergotec offers suitable replacement springs for other weight classes. Feel free to contact us if you need a different tune. 5. Does the seat post fit my bike?
The PM-705N is suitable for seat tube angles greater than 70° and saddle rails with a diameter of 7 mm, which applies to most bikes. Just select the appropriate tube diameter (27.2 / 30.9 / 31.6 mm).
Characteristics
- Original new priceCHF 119.90 / You save CHF 40.-
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Veloplace
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CHF 79.90CHF 119.90You save CHF 40.-


