The MXA test riders loved the Hinson six-spring clutch
body mod. We run these mods on our own test bikes.
successful changes as possible into their CRF450. The most obvious of these changes were Injectioneering’s throttle body modification and Hinson’s six-spring clutch. The throttle body mod consists of reconfiguring the EFI throttle body’s butterfly valve so it can open sooner for a more controlled burst of low- end power (plus it lessens flame-out). The result is a better flow and transition of flow for that first quarter turn. As for the six-spring Hinson clutch, it simply replaces Honda’s barely adequate four-spring stocker (and is exactly what Team Honda runs in their race bikes). Other upgraded features included an HDR engine rebuild (to basically stock specs), FMF Factory 4.1 exhaust with MegaBomb header, Sanco coolant hoses, EBC 280mm oversized front brake rotor, Prographix decals, SDG gripper seat, and Pro Taper bars, grips, sprockets and chain. TEST RIDE: HANDLING THE ROUGH AND TUMBLE The first thing we noticed about the suspension was its firm setup. Many aftermarket suspension companies have a tendency to set up their suspension on the firm side, so don’t exaggerate your skill level when discussing your weight and speed. When MXA’s faster test riders jumped on the freshly prepared MX-Tech CRF450 and pushed hard during hot laps, the suspension felt great. When the hot laps stretched into motos, we wanted to go softer. After backing out on the compres- sion clickers, we achieved a much friendlier ride with very little sacrifice in performance. To make sure that we were on the right track with the suspension, we