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FX Tracklocross Frameset

FX Tracklocross Frameset

Regular price $ 199.99 USD
Regular price $ 199.99 USD Sale price $ 199.99 USD
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Size: XSMALL How to find my size
Color: Polished Chrome


The FX is the product of wanting to shred around on dirt with our brakeless fixed-gear frames. We tweaked specific areas of the bike to try to improve common issues that you encounter riding fixed and especially, riding fixed on dirt.

The Poseidon FX has a raised bottom bracket that prevents pedal striking even on the steepest of drops. The head tube angle is slacked so your toe doesn't hit the front tire as easily when turning. This also offers a slightly softer ride on rougher terrain. On the small frame in particular you will see that the head tube angle is slacked the most as toe overlap is a common problem for smaller frames. You can pedal freely even through the tightest of turns on that size.

The FX frame can easily fit a set of 700x40 cross or gravel tires. 

Frameset includes Frame, Headset, Seatpost Collar, and Fork only.

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Box Dimensions are: 39x7x22 (inches)

Box Weight: 10.5lbs


We made this bike to fit your standard fixed gear wheels so a 100mm front and a 120mm rear.

Fits a 68 x 115 square taper bottom bracket. We recommend a square taper bottom bracket and crankset for this build.

All straight returns are subject to a 15% restocking fee and return shipping. The bicycle must be returned in the original packaging (unopened and unridden).

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Fixed Gear from Road to Trail

What makes the FX so great is that it gives you the opportunity to run a larger gravel tire on your frameset. This opens up all sorts of trails and options. This frameset is perfect for the person looking to take their fixed gear riding to new trails.

Customer Reviews

Based on 14 reviews
FX Tracklocross Frameset

This a great frameset. Some of the parts used for the build were: 68x115 square taper Shimano bottom bracket, Used Sugino GLP 144 BCD crankset 46t with 18tooth rear. Wheels were Alex rims AT470 with 700 by 40 Happy Medium Kenda tires, and a Brooks B17 Narrow saddle. It is fairly light (21.3 lbs) and quick. I use it for mainly gravel trails and some street with a top speed of 15mph on the flat. I did add a front brake which is a Tektro R559.Hope his helps anyone with their build, you wont regret this purchase!

John Standley
Tracklocross 🚴😎👌

Sweet ride. Running 41mm knobbies with room for more (how wide can I go?) Love the bike!! Just ordered a 2nd frameset✌️ Any plans for larger sizes 61/62? & recommendations for cranksets? Keep up the good work Poseidon 🏆🙌