The King Shocks 3.0 Race 12-inch shock with OD swivel and four-tube bypass piggyback layout uses a 1-inch shaft and large 3/4 bypass tubes. That four-tube bypass indicates multiple dedicated valving paths and the piggyback reservoir keeps extra fluid and valving alongside the main body. This configuration is intended for installations needing a swivel-mounted 12-inch 3.0 Race shock with four-tube piggyback bypass.
King Shocks 12in 3.0 Race Shock OD Swivel 4 Tube Bypass Piggyback 1in Shaft Large 3/4 Bypass Tubes