Alpine S2-S40C - S-Series 4" 2-Way Component Car Speakers 280 Watt Total Power hot Side Boost Pipe P120 / 170 watts

P120 / 170 watts

and also causes friction and wear as the piston starts to move when the pressure changes to vacuum

2-way coaxial system with car-specific upgrade speakers for BMW4" woofer and ¾" tweeter for the original mounting positionsPower handling RMS / max

Maxumum rear axle weight - 1060kg Kit has 4 springs

Alpine S2-S40C - S-Series 4" 2-Way Component Car Speakers 280 Watt Total Power hot Side Boost Pipe P120 / 170 watts2 Way Speaker Set 4" 10 cm Newly redesigned and Hi Res Audio Certified, the Next Generation S Series S2 S40C 4" Component Speakers offer a new standard in entry level sound performance. Using "trickle down" technology, inspired design, and performance cues from the Ultra High Resolution AlpineF#1Status system, the Next Generation Alpine S Series Speakers are now Hi Res Audio Certified and able to reproduce up to 40kHz frequency response. This new