ISR Performance RB Swap Mounts for Nissan 240sx S13/14

The ISR Performance RB swap mounts for the Nissan 240SX are a single mount kit that fits RWD RB series engines into either the S13 or S14 chassis. Whether you are dropping in an RB20DET, RB25DET or RB26, these mounts locate the engine and transmission on the factory subframe without one-off fabrication.

Mount Design

• Fits all RWD Nissan RB series engines
• Urethane engine and transmission mount bushings that control engine movement while still absorbing vibration
• Stiff enough for track and drift use, compliant enough for a daily driven swap
• Works in both S13 and S14 chassis, so the mounts can move with the engine if you change cars

Fitment

Nissan 240SX S13 (1989-1994) and S14 (1995-1998) chassis receiving an RB series engine swap.

Why Urethane

Solid mounts transmit every pulse of a straight six into the cabin, and soft OEM style rubber lets the engine rock under load and torque steer the driveline. ISR's urethane bushings sit between those extremes, which is why the same mount kit works for a street RB25 S13 and a competition car.

Planning Your RB Swap

Mounts are the first piece of an RB swap, but budget for the rest of the package as well: a front facing intake manifold if you need clearance, a front mount intercooler and piping for the S chassis, and the appropriate transmission crossmember for your RB gearbox. ISR offers a billet RB25DET and RB20DET front facing intake that pairs with these mounts for a cleaner engine bay.

All ISR Performance products are designed for off-road use only.