We are pleased to bring you 'A' foam type to the ATOM wheels. 'A' foam material can be used to provide longer lasting foam, wear rates are reduced compared to the Q foam range, however, in some cases, outright grip levels are lower. In some cases this can be of benefit, such as a extremely grooved in, high grip national style or permanent track. MB Raceway in the UK is a good example of where this foam type may be a useful addition to your tyre box. Available in 37sh and 40sh rear, 40sh and 47sh front.