Improve your bike with a new front sprocket for just £9, or transform it to knock four seconds from your lap time with the free 16-page guide with MCN, August 27.
The five top sports 600s are modified, following advice from tuning experts, owners and race teams, and then tested against the standard versions around the challenging Knockhill track.
Each bike received eight or nine modifications, with every change individually rated for effectiveness. Mods include new front sprockets and air filters, rear shocks and race cans. Is it worth splashing out £700 on a new rear shock, or would a £9 front sprocket make more of a difference to your riding?
Find out which 600 is transformed by the mods into a " fire-breathing, 750-eating beast " with lap times, power and torque charts and acceleration analysis, revealing how good your bike could become.
All this info is crammed into the free 16-page supplement with MCN, August 27.
Plus: 2004 Kawasaki range. New ZX-10R, Z750 and VN2000 and the updated ZX-6RR. First pictures of the new Yamaha XT660-R, Kevin Ash’s column, save money on a new Triumph, Be an expert on the Suzuki GSX-R750, Shoei Kato tribute replica, Premier Style lid tested, Leather jackets under £250, BMW K1200GT travels to Italy, Supercharged Suzuki Hayabusa tested, MCN’s seven-day What’s On guide, Shane Byrne’s BSB title and full Cadwell Park report, Safety fears raised by Kagayama’s horror crash, the verdict from the inquest into the death of David Jefferies, An exclusive look at a disassembled Ducati Desmosedici V4 MotoGP bike, latest GP testing news, Hodgson moving closer to GPs, Win an R6 plus prizes with a total value of £9500, European Supermoto, and an exclusive first ride on the new DR-Z-powered CCM 404 Dual Sport.