A bicycle seatpost clamp designed to secure oversize collars for reliable saddle positioning, the Fasen 2 Bolt Oversize Clamp suits frames that require a larger seat tube. Peace of mind comes from a straightforward two-bolt fastening, keeping saddle height stable during everyday rides. Will the two-bolt oversize solution meet the needs of regular riders who push their bikes hard?
⚡ At a Glance
- • Holding Strength: Designed for 34.9 mm oversize tubes, intended to resist slippage under normal riding loads
- • Best for: Cyclists replacing or upgrading seatpost clamps on frames specified at 34.9 mm
- • Not ideal for: Frames or seatposts with smaller or non-standard diameters that require different clamps
Oversize clamp matches a 34.9 mm nominal tube diameter and uses a two-bolt fastening. Oil Slick appears in the listing name as a finish option for those wanting a distinctive look.
Secure saddle positioning – With two-bolt fastening
A two-bolt configuration applies compression evenly around the clamp, allowing controlled tightening on a 34.9 mm tube. Separate bolts help distribute clamping force to reduce uneven pressure points.
Consistent fastening helps prevent seatpost slip during climbs and rough surfaces, keeping saddle height stable for longer rides.
Direct oversize compatibility – Thanks to 34.9 mm diameter sizing
Nominal sizing matches frames and seat tubes specified at 34.9 mm, eliminating the need for shims when the tube diameter is correct. Precise internal diameter improves surface contact between clamp and tube.
A correct fit reduces installation guesswork and makes the clamp a straightforward replacement for frames calling for 34.9 mm collars.
Quick home installation – With simple two-bolt tightening
Two accessible bolts accept common Allen keys or hex tools, enabling controlled torque without specialised equipment. Even tightening across both bolts simplifies adjustment and future maintenance.
Installation and routine adjustments are manageable for home mechanics, so saddle height changes or reseating require minimal time.
✨ The 4 Key Reasons for Fasen 2 Bolt Oversize Clamp
- 34.9 mm Compatibility – Fits common oversize seat tubes without need for shims
- Two-bolt Fastening – Enables even tightening to reduce seatpost slip on rough roads
- Oil Slick Finish – Adds an eye-catching appearance for custom builds and personalisation
- Compact Profile – Minimal bulk preserves frame clearance and simple aesthetics
📋 Technical Details at a Glance
- Category: Bicycle seatpost clamp
- Brand: Fasen
- Product ID: B01N6AR208
- Diameter: 34.9 mm
- Bolt Count: 2
❓ Frequently Asked Questions
Q: What diameter does the clamp fit?
A: The clamp is designed for a 34.9 mm nominal tube diameter.
Q: How many bolts are used to secure the clamp?
A: A two-bolt fastening system secures the clamp around the tube.
Q: Does "Oil Slick" refer to the finish?
A: The product name includes Oil Slick, indicating that finish as a listed appearance option.
🏆 Our Verdict
The Fasen 2 Bolt Oversize Clamp suits cyclists who need a direct replacement or upgrade for frames specified at 34.9 mm, particularly riders who value a reliable mechanical fastening. Two-bolt construction and exact oversize sizing are the key selling points for stable saddle positioning. Assess longevity through correct installation and routine maintenance, which will determine long-term value.
