I can only find that on Bike-components.de, not bad price though. I am concerned that it's going to be really noisy though as I have a slight warp in my cranks or chainring. I've used a 1r8 before and that made my bike sound like an old merc diesel. The intrax is still a bushed design right?
I've found a Wippermann Intrax 708 for £8.99 - would this would be a better option than a KMC Z 610HX at £9.49 for a 3/32 fixed drivetrain?