Product Description
The TranzX JD-YSP39 is a dependable internally routed dropper seatpost for trail, all-mountain, and general MTB use.
This multi-variation listing offers 100mm, 150mm, and 170mm travel options, all with a 34.9mm seatpost diameter and Stealth internal cable routing. The post uses air-pressure actuation and a 2-bolt saddle head for secure, precise saddle positioning.
Choose the travel and overall length that best matches your frame clearance and riding position.
Variation Options
- 34.9mm x 355mm x 100mm Travel
- 34.9mm x 455mm x 150mm Travel
- 34.9mm x 490mm x 170mm Travel
Key Features
- Remote-actuated dropper seatpost
- Stealth internal cable routing
- Air-pressure actuation
- 2-bolt saddle clamp
- Zero offset
- Aluminum construction
- Multiple travel options for different frame and rider fit requirements
Specifications
- Brand: TranzX
- Model: JD-YSP39
- Product Type: Dropper Seatpost
- Diameter: 34.9mm
- Travel Options: 100mm / 150mm / 170mm
- Overall Length Options: 355mm / 455mm / 490mm
- Offset: 0mm
- Routing: Internal / Stealth
- Actuation: Remote
- Saddle Clamp: 2-Bolt
- Rail Compatibility: Universal
- Material: Aluminum
- Color: Black
Size Guide
| Diameter |
Overall Length |
Travel |
| 34.9mm |
355mm |
100mm |
| 34.9mm |
455mm |
150mm |
| 34.9mm |
490mm |
170mm |
Compatibility
Designed for compatible mountain bike frames using a 34.9mm seatpost diameter and internal dropper cable routing.
Before ordering, confirm:
- Seat tube diameter
- Maximum insertion depth
- Available frame clearance
- Desired saddle height
- Required dropper travel
Longer-travel versions require more available insertion depth and exposed post length than shorter versions.
Included
- One TranzX JD-YSP39 dropper seatpost in the selected size
Remote lever, cable, housing, and other installation hardware are included only if pictured or specifically stated.
Condition
