New forged-alloy pistons bump compression from 12.5:1 to 12.8:1. Changes to the intake-cam profile (lift has been reduced from 8.6 to 8.2mm) and exhaust system (header diameter has been reduced from 38.1 to 35.0mm) boost low-end and midrange power while still achieving the same peak output as last year, thanks to the across-the-board gains produced by the higher-compression engine. Underneath the engine resides a new, higher-volume Suzuki Advanced Exhaust System (SAES) with a servo-operated butterfly valve (Suzuki Exhaust Tuning, or SET) built into the mid-pipe to further enhance low-end performance, and a new, distinctly shaped triangular silencer at the terminus. Suzuki's Dual Throttle Valve (SDTV) fuel-injection system with two injectors per cylinder has been upgraded for '08 with new, finer-atomizing eight-hole injectors compared to last year's four-hole units. The throttle-body shape has also been revised, with the outlet diameter reduced from 40 to 36.5mm to increase intake airflow velocity. The motor also gets enlarged ventilation ports between the cylinder bores (increased from 39mm to 41mm), to reduce internal crankcase pressures and allow the pistons to more freely pump up and down.