system for 2018 that helps fine-tune the engine output
to deliver the best traction in all riding conditions. Suzuki
Holeshot Assist Control (S-HAC), commonly referred to
as “launch control,” returns on the 450 motocross model.
S-HAC is similar to other manufacturers’ launch control
systems in Mode-A, where it alters ignition timing to reduce
wheelspin for a smoother delivery. Where S-HAC differs is
Mode-B, delivering a more aggressive power for stronger
acceleration. It turns off automatically after 4. 5 seconds or
when the rider shifts into fourth gear.
A 30-percent-larger air-cleaner opening and a redesigned intake increase the airflow into the throttle body. The engine also received performance
upgrades for a higher peak performance.