The KORE3 ø340mm Big-Brake Kit for the 1982-1992 GM F-body application adapts high-performance, high-quality, 6th generation (C6) Z51 Corvette brake components to the third generation F-body (GMF3) spindles. Please refer to the KORE3 GM Big-brake Application Chart for details
regarding specific vehicle compatibility.
C6 Z51 front brake components are a huge improvement over the original ø10.5" x 1" disc and single-piston, cast iron calipers that were standard on the GMF3 applications and significantly better than the ø12" x 1.1" 1LE-performance package offered on some 1988-1992 models. The C6 Z51 front rotors measure ø340mm x 32mm thick (ø13.40" x 1.26") and provide higher brake torques and additional thermal mass for more aggressive, sustained driving. Additionally, the directional or pillar vane design of the C6 Z51 rotors versus the straight vane F-body rotors increases the overall cooling efficiency of the system and rigidity of the rotors, resulting in maximum braking performance while minimumizing brake fade and NVH.
C5/C6 Z51 front calipers are pressure cast aluminum with full width stiffening ribs in order to maximize caliper
rigidity, extend service life, and improve pedal firmness and feel,
all in a compact, lightweight package. The C6 calipers are interchangeable with the C5 calipers and are approximately 25% more rigid due to additional material across the bridge of the calipers. Both C5 and C6 calipers have twin ø40.5mm pistons and utilize a pad abutment design, where the braking torque is transmitted directly from the pads into the pad abutment brackets and the spindles they mount to, leading to better performance you can feel at the pedal.
There is excellent aftermarket support for C6 Z51 rotors and C5/C6 brake pads to suit nearly anybody's needs and/or budget. This ø340mm KORE3 big-brake kit is an easy upgrade from the base level ø325mm kits ands adds even more thermal capacity for those who push their cars to the limits. Any 3rd generation F-body running ø18" or larger wheels can benefit from the addition of this kit, whether you're grocery-getting, pro-touring, or a little bit of both.
- KORE3 GMF3 Kit is designed for 1982-1992 GMF3-spindles that were originally supplied with the single-piston cast iron calipers only. Brackets are not compatible with 1LE spindles.
- Kit installation requires moderate, irreversible spindle modifications with basic metal fabrication tools. All necessary modifications are detailed in the instructions.
- Minimum ø18" wheels are required, however not
all ø18" wheels will fit. Please verify fitment prior to ordering using the appropriate KORE3 fitment template. Wheel fitment is the buyer's responsibilty. Please contact us if you have any questions regarding your specific application or the proper use of the templates.