For those of you drivers running the brilliant CAT K1 - and want to upgrade to the new Aero spec - here is a list of the parts you will need to do the complete conversion:

U4502 - Carbon Chassis
U4503 - Carbon Top Deck
U5123 - Body, mask and decals
U5124 - Rear Aero wing
U4365 - Black Hex rear wheel
U4495 - Black Hex front wheel
U4174 - Gear Diff (you will need 2)
U4498 - Alloy Layshaft mount - LH
U4499 - Alloy Layshaft mount - RH
U4497 - Front nut guard
U4489 - Rear nut guard
U4388 - Rear alloy wheel hex
U4507 - Front Alloy wheel hex
U4476 - Carbon Fibre Rear shock mount
U4505 - Carbon Fibre Front shock mount
U4500 - Rear idler post
U4508 - Big Bore shock - pro bushing
U4501 - Steering pivots
U4490 - V2 Big Bore MED shock bodies
U4491 - V2 Big Bore LONG shock bodies
U4488 - 12mm Hex Drive pins

These parts will bring your K1 up to the very latest AERO spec for the 2014 racing season.