The factory subframe (suspension member) has significant deflection and compliance due to its rubber bushings. Vehicle manufacturers must balance performance with factors such as comfort, cost, and ease of assembly at the factory.
On 2021+ Civics, the subframe mounting holes are 2mm larger than the bolts, causing vibration and rattling during aggressive cornering and braking. This reduces steering response. PRL Motorsports developed the SRS Collar Kit to prioritize performance.
The PRL Motorsports SRS Collar Kit effectively addresses these issues by precisely filling the 2mm of play in the subframe mounting holes. It prevents unnecessary subframe movement and improves handling performance.
Specifications:
- Precision CNC machined to fill the 2mm gap in the subframe mounting bolts, reducing subframe looseness and unwanted movement
- Reduces unnecessary movement and chatter during hard cornering and braking
- Improves handling and increases chassis rigidity
- 6061 Aluminum construction, black anodized
Vehicle Compatibility:
2021+ Honda Civic
2022+ Honda Civic FL5 Type R
Installation Instructions:
SRS Collar Kit Front & Rear - 2021+ Honda Civic (English only)
Before You Order
〇 Regarding Import Duties
At Shaftoya Shopping Site, we cover the import duties incurred during customs clearance, so you will not be charged any additional fees beyond the total amount paid at checkout.
〇 Compatibility Confirmation
All product databases are based on North American vehicles (USDM). Please confirm whether the part is compatible with your Japanese vehicle (JDM) before ordering. (If you are unsure if a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are sorted by year, make, and model using the tabs on our top page, this does not necessarily mean they will fit Japanese models without modification.
All product descriptions are translated into Japanese using translation software. As there may be confusing expressions, please contact us before placing your order if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of checkout. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. In rare cases, there may be a significant discrepancy between the automatically calculated shipping cost and the actual cost for large items such as body parts. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow yourself plenty of time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all items are shipped via air freight; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
The products we handle are essentially designed and manufactured outside of Japan. Please note that they are not compliant with "Japanese vehicle inspection standards," and we cannot provide documents such as strength evaluation reports for Japanese inspection purposes. Therefore, all parts are sold for "circuit, private property, or off-road use," and installation and usage are at your own risk.
○ Regarding Warranty
Please check the contents of your order immediately upon arrival. As all items are shipped internationally, there may be cases of shipping damage to the packaging or the product. We will only provide returns, refunds, or replacements for shipping-damaged items, defective products, or incorrect items if notified within 7 days of receipt. Please understand that for products sold through us, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located in Japan.