BMW R100R / R100GS / R80R Bench Seat Mounting Bracket & Support Insert (OEM 52532323001 / 52532307192

Overview This is a functional replacement for the factory plastic seat mounting bracket/insert used on 1990s BMW Paralever Airhead roadsters. Over decades of heat cycles and vibration, the original BMW nylon inserts become brittle and often crack around the mounting holes or along the stepped retention lip when removing the saddle. This part bolts directly to the underside of the dual bench seat pan and engages the rear subframe cross-tube to anchor the saddle securely and prevent lateral shifting. Compatibility - BMW R100R (1991–1995)

- BMW R100R Mystic (1994–1995)

- BMW R80R (1991–1995)

- May also fit Paralever BMW R80GS / R100GS models sharing the same 52 53 seat mounting hardware—please verify dimensions against your seat pan before printing.

Reference BMW OEM Part Numbers: 52 53 2 323 001 / 52 53 2 307 192 Recommended Print Settings Because this bracket absorbs rider weight, vibration, and under-seat engine heat, print orientation and material choice are critical for longevity: - Orientation: Print on its side (flat profile down) so the layer lines run continuously along the length of the wedge and across the stepped lip, rather than stacking vertically where shear forces could split the layers.

- Material: PETG, PETG-CF, ASA, ABS, or PA-CF (Nylon). (Avoid standard PLA, as under-seat temperatures in summer sun can cause it to warp or soften).

- Walls / Perimeters: 4 to 5 walls for strong fastener clamping force.

- Infill: 30%–40% Gyroid or Cubic.

- Supports: Minimal supports needed depending on orientation (primarily under the recessed pocket or side retention tab).

Installation Notes Reuse the original factory mounting screws. Snug the fasteners firmly against the seat pan, taking care not to over-torque them into the printed plastic.