The Borla 60593 is a 2.5-inch extension pipe that connects Borla's 140680, 140680BC, and 140681 Cat-Back systems to the longer 140.6-inch wheelbase of the Toyota Tacoma Crew (Double) Cab with a 6-foot-1-inch bed. It is made from T-304 austenitic stainless steel and CNC-machined for a precise fit. A 140-inch wheelbase truck needs this piece to run the Borla system at all, so skipping it or substituting a generic pipe leaves the install incomplete. Choosing it over a cheaper knockoff is mainly a durability decision. The manufacturer contrasts T-304 with the T-400 series, such as 409, which is common in budget pipes and corrodes faster under road salt and moisture.
This part suits owners of the 3.5L V6 Tacoma in 2WD or 4WD with automatic or manual transmissions. Its 2.5-inch inlet and outlet match the Borla cat-back piping, and it is 16.63 inches long with one 2.5-inch clamp included. Search terms this matches include "2016 Tacoma 140.6 wheelbase extension pipe," "Borla 140680 Tacoma crew cab long bed," and "T-304 stainless Tacoma exhaust extension." Confirm your model year and wheelbase before ordering, because the manufacturer's application table covers 2016 through 2023.
Yes. The manufacturer states that 140-inch wheelbase vehicles require this extension pipe, and it is not included in the 140680 or 140681 kit.
Yes. The manufacturer lists one 2.5-inch clamp included with the pipe.
The manufacturer recommends that an exhaust shop or professional aftermarket installer perform the installation. The tool list in its install sheet is short, so an experienced DIYer can also attempt it.
The manufacturer's install sheet for the Tacoma Cat-Back lists a 3/8" drive ratchet, a 3" 3/8" drive extension, a 15mm deep-well socket, a 14mm socket, a pry bar, and spray lubricant. Spray the clamp and fasteners well before you start, since rusted hardware is the most common reason a rear exhaust job stalls. Use the pry bar carefully to line up the joints so the 2.5-inch connections seat square before you tighten the clamp. The manufacturer recommends a professional installer, so if you have never worked under a truck with exhaust hangers, budget extra time or have a shop handle it.
