Front (and rear, for GSR40 and GSR40-TS) brake caliper for Bigfoot, Super Bigfoot, Geo-Bigfoot, GSR40, and GSR40-TS. PMW part # 8018. Note: this is the pre-"Mad Dog" caliper, and will only fit on the above scooters manufactured prior to March 2004.
Also check out our adapter so you can use the mad dog caliper with your old style forks