The Wilwood 260-1333 is a pull-type hydraulic clutch slave cylinder with a billet aluminum body, a tough anti-corrosion plated finish, and a stainless steel pushrod. The manufacturer says it is ideal for drag racing, late model stock, pro series, and off road applications. Its pushrod stroke is longer than most cylinders, assuring a full release of the clutch. Compared with a stock cable setup or a cheaper unit that does not suit your clutch linkage, a pull-type hydraulic conversion gives you consistent pedal feel and full disengagement under race use. Owners on user forums have pointed out that a pull-type unit can cost much less than an internal hydraulic slave with its throw-out bearing. The manufacturer also lists a separate rebuild kit, 260-5524, so the cylinder can be serviced rather than replaced.
Because this is a universal slave cylinder rather than a vehicle-specific part, confirming clutch-fork geometry is your responsibility before ordering. The cylinder angle must be 90 degrees from the clutch fork at the apex of travel and parallel with the clutch swing. Off-axis installation will cause premature wear or failure due to side loading. You will drill the fork at a point that delivers full engagement within the maximum stroke of 1.38 inches. The manufacturer also advises against mounting the cylinder to the chassis, and the rod should float rather than being captured by nuts on both sides of the fork. Pair it with a 3/4" master cylinder, and note that the inlet is either 3/8-24 IF or 1/8-27 NPT. Search terms that fit this part include pull type clutch slave cylinder 7/8 bore, Wilwood 1.38 stroke hydraulic clutch, and external slave cylinder clutch fork install.
The manufacturer describes this cylinder as universal and not intended for any specific vehicle. It is the responsibility of the person performing the installation to determine the suitability of the part, proper mounting, and a custom bracket may be needed to hold the cylinder at the correct distance and angle.
The manufacturer recommends Wilwood Hi-Temp 570 (DOT 3) or Wilwood EXP 600 (DOT 4) brake fluid for this cylinder, with a maximum input pressure of 1,200 PSI.
The manufacturer advises checking the alignment of the slave and clutch fork for off-axis force or binding when a cylinder wears or leaks within a short period. Owners on user forums have also reported cases where the threaded rod unscrewed itself during use, so confirm the rod is secured and the mounting is solid.
This is not a simple bolt-on swap. You will need to locate and drill a rod mount hole in the clutch fork, which the manufacturer says may not sit where the original linkage contacted the fork. After test fit installation, install pivot bushings and adjustment nuts. Cut excess threads on the rod mount to prevent interference, leaving enough for future adjustment purposes. If you notice rattling after installation, the manufacturer suggests a low tension spring between the fork and the bell housing or chassis. Before disassembly, photograph the existing brake system, as the manufacturer recommends. Bleed the system with the specified DOT 3 or DOT 4 fluid and verify leak-free operation before driving.
