Regarded by many as the best all-round performance tubeset offered by Birmingham-based Reynolds, 853 offers uncompromising performance and superb ride quality alongside an excellent strength-to-weight ratio, thanks largely to its heat-treatment process. The resultant boost in tensile strength (i.e. stronger for the same area of metal) means Reynolds are able to draw thinner walled tubes (down to 0.5mm thick in places), without any loss of structural integrity.
The stars of the show here are the ultra-light 853 Proteam toptube and downtube - a special range of larger diameter, oversize tubes available in thinner wall thicknesses to offer increased stiffness whist keeping weight down to a minimum.
Borrowing heavily from development of the flagship team bike, you'll find a Shimano BB86 bottom bracket shell keeping the pedalling forces in-check down below. The wider 86.5mm shell (vs.conventional 68mm) gives the clearance and weld surface needed to run the massive 24mm round chainstays. Combined they offer a super stiff pedalling platform for optimum power transfer from rider to tarmac.
Up front you'll find an oversize 44mm headtube matched with a tapered steerer carbon fork for optimum strength and pinpoint-sharp handling.