KIES MOTORSPORTS, LLC — TERMS AND CONDITIONS OF PURCHASE AND SALE

Adjust drivetrain support for street or track use with Rennline's M21 tunable semi-solid mount pair. Billet aluminum housings and interchangeable polyurethane inserts provide nine stiffness combinations to help reduce drivetrain movement and sharpen shift feel.

Included insert choices

• Yellow, 65A: street.
• Blue, 75A: aggressive street and track.
• Red, 85A: race.

Sold as a pair with three sets of inserts.

Vehicle fitment

• Porsche 911 (991): 2013–2019, per Rennline's fitment guide.
• Porsche Boxster and Cayman (981): 2013–2016.
• Porsche 718 Boxster and Cayman: Rennline lists a transmission-mount application from 2017 onward. Confirm the exact model, year and mounting position before ordering; this is not a blanket 718 engine-mount fitment claim.

Installation notes

For replacement of PADM mounts on 991/981 vehicles, shorter bolts are required: four OE 90038516701 bolts for 991, or four OE 90038512101 bolts for 981. Arrange the appropriate hardware before installation. Rennline rates installation difficulty 3 out of 5.

Manufacturer part number: M21.