Loosen your rear bolts using a 15 spanner.
On the Rook One series, you'll want to loosen the chain tensioner screw to allow the wheel to move forward.
Loosen the chain by pushing the wheel forward towards the bicycle frame.
Next remove the chain from the freewheel cog and let it rest on the frame.
You can now remove the wheel.
The locking ring on your Rook fixed cog is tightened by the workshop before we send out your bike. It requires a locking ring tool to tighten. If you feel it slipping, head to your nearest bike shop and they'll be able to tighten it up for you.
Now slide your wheel back onto the frame with the fixed cog on the chain side.
With the wheel positioned all the way forward in the frame, thread the chain onto the fixed cog. Your chain should hang like sleeve of wizard at this point.
To tension your chain on the Rook One series, tighten the chain tensioning screws equally until your wheel is straight and your chain is pulled straight. Not too tight, not too loose. Just as the chain stop drooping is around about the correct tension. On the Rook Race series, this is done by holding the wheel in place and tightening the nuts with your 15 spanner.
Once the chain is at the desired tension, tighten the bolts back up using your 15 spanner.
Now you're fixed! Take sometime to get used to it if you've never ridden fixed before. Experiment with slowing down using the pedals and maybe try a skid! We highly recommend Power Straps for riding fixed.