Description Alcon RC4 Caliper (Used on BMW F80 and Nissan GTR Kits Rear) brake pad.Paigd RS29 Compound.PN PNP4469X300.4 Pagid RS29 – Alcon Super Kit Front Suitable for all RC4 Based Super Kits – 2019 Onwards This compound combines the outstanding wear rate of the RS19 with a slightly higher coefficient of friction and initial bite. Due to its outstanding wear rate and driveability PAGID endurance materials are often used at sprint races as well. SKU: PNP4469X300.4.