SKS makes a good clip-on clip-off set that works well on just about anything for 15 bucks a peice. For the more moto look, go with Toby Henderson(aka THE) fenders. Formed lexan and a bit larger. I use both types in my fleet and race with both. Front fenders are not an option in the mud/gravel trails I race in around here, though they are rather rarely used on the circuit.