2016-2021 Honda Civic 2017-2021 Honda Civic Type R Subframe Reinforcement System

The PRL Motorsport SRS Collar Kit effectively counters the significant slack present in a vehicle's factory subframe. This slack arises because OEM engineers often balance performance with factors like comfort, cost, or ease of assembly. For instance, in the 10th Gen Civic, the subframe mounting holes are 2mm larger than the bolts, leading to shifts, vibrations, and rattles during intense cornering or braking, which can reduce steering sharpness and responsiveness. The SRS collar kit eliminates this slack by precisely filling the 2mm gap around the subframe mounting bolts, ensuring a snug fit that prevents any extraneous movement. This adjustment significantly cuts down on vibrations, boosts handling, and increases chassis rigidity, making it ideal for track days, autocross, or simply enhancing everyday driving.