If the late great Blackspire had a mission statement based on it's core principles it surely included making sure your chain never falls off. Whether through their Snaggletooth Narrow/Wide chainrings, or their Stinger BB mount chainguides, or their bashguards with C-Plate mounted chainguides and Y-plate mounted rollers, they wanted to make sure you never had to stop to put your chain back on. Well the Einfachx Seat Tube Mount Chain Guide is the simplest "problem solver" that anyone could benefit from having in their parts bin and it has never been easier and less expensive to get a brand new one than today.

Brand New Blackspire Einfachx Seat Tube Mount Chain Guide

This is a fully adjustable, well made, high quality, lightweight part. The seat tube clamp is aluminum and splits in half to get it around your seat tube and is the largest diameter; 34.9. The 31.8 and 28.8 collars for reducing the diameter are plastic. The clamp uses two 4MM hex bolts to hold it in place.

The arm with the slot that the chainguide fits into is aluminum as well and is adjusted by a separate, third 4MM bolt on the collar, so you don't lose your position on the seat tube when adjusting the arm. The arm can be moved out in parallel to your chainring and rotated around vertically to find the optimum position. 

Finally, the polymer chainguide itself has a deep slot to keep your chain in place and is for 1X front chainring setups. It is held in place with one 4MM bolt and a machined black anodized slotted nut that perfectly matches the slot in the arm. The slot in the arm is 40MM in length and there is a 20MM range of adjustment. The chainguide also has a slot that matches the machined nut so once tightened in place it cannot rotate around and lose position.

The aluminum clamp and polymer guide weight 76 grams. The plastic collar for 31.8 is 1 gram and the thicker plastic collar for 28.8 is 4 grams.

You will receive yours sealed in it's original bag and shipped inside a small cardboard box to keep it safe and minimize shipping costs.