ST Suspensions [88-91 Civic/CRX] Rear Anti-Sway Bar - Black

Looking to improve the handling of your vehicle? Our ST Anti-sway Bars are the ideal solution. By upgrading the anti-sway bars you reduce the amount of body roll and ensure improved handling while providing better traction. ST Anti-sway Bars improve the driving dynamics of your vehicle and complete your suspension upgrade. Our ST Anti-sway Bars are made of cold-formed heavy duty aircraft steel. The reduction in the wheel load differential between the outer and inner wheel in a curve will be immediately noticeable. Depending on the vehicle, some of our ST Anti-sway Bars are adjustable to give you the freedom to fine tune the force and further improve your vehicle's lateral stability and cornering grip. Our high performance ST Anti-sway Bars go through multiple quenching and tempering processes along with a final epoxy coating to maximize the protection from extreme weather and road debris. Not only do they look good, they are also built to last. Due to the improved lateral control, reduced tendency for body roll, and the minimized load differences between the outside and inside the wheel in a turn; you will feel more direct handling when going into curves or with fast load changes. The versatile and adjustable ST anti-sway bars effectively minimize body roll, enhancing both traction and vehicle handling. 1988-1991 Honda Civic/CRX 1.5+1.6 (4cyl.)

• Greatly improve handling during rapid load changes and hard cornering by reducing the load difference between the inside and outside tires.
• Manufactured from high quality spring steel and finished with a durable powder coating for a long lasting finish.
• High quality composite bushings reduce deflection and improve load transfer.
• Improve balance by dialing out under or oversteer.
• Multiple adjustments when possible.
• More direct steering behavior.
• Increased traction.
• Made In the USA

Improve cornering response and reduce body roll with the ST Suspensions Rear Anti-Sway Bar, part number STS51140. Designed for 1988-1991 Honda Civic and CRX models with 1.5L or 1.6L four-cylinder engines, this suspension upgrade helps provide more direct handling, increased traction, and improved lateral stability.

• Feature: Reduces body roll and wheel-load differences during hard cornering and rapid load changes.
• Feature: Constructed from high-quality spring steel with a durable black powder-coated finish.

The ST Suspensions anti-sway bar improves vehicle balance by helping control the transfer of load between the inside and outside tires during turns. This can reduce understeer or oversteer tendencies while delivering more predictable handling through curves and during quick changes in direction. The result is a more responsive suspension setup with improved cornering grip and a more direct steering feel.

Built from cold-formed, heavy-duty aircraft spring steel, the STS51140 is engineered for demanding street and performance use. Multiple quenching and tempering processes help support consistent spring performance, while the protective epoxy powder coating helps guard against weather exposure and road debris. High-quality composite bushings reduce deflection and promote efficient load transfer between the suspension and chassis. Where applicable, ST Suspensions anti-sway bars offer adjustment options for fine-tuning handling balance and lateral stability. The bar is made in the USA and is intended for compatible 1988-1991 Honda Civic and CRX applications with 1.5L or 1.6L four-cylinder engines.

Features:

• Reduces body roll during cornering and rapid load changes
• Improves traction and lateral stability
• Helps balance understeer and oversteer characteristics
• Provides more direct steering and handling response
• Manufactured from high-quality cold-formed spring steel
• Finished with a durable black powder coating for corrosion and road-debris protection
• High-quality composite bushings help reduce deflection
• Adjustment options may allow handling balance to be fine-tuned
• Made in the USA

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Fitment:
Honda Civic Base 1988
Honda Civic Base 1989
Honda Civic Base 1990
Honda Civic Base 1991
Honda Civic DX 1988
Honda Civic DX 1989
Honda Civic DX 1990
Honda Civic DX 1991
Honda Civic EX 1990
Honda Civic EX 1991
Honda Civic LX 1988
Honda Civic LX 1989
Honda Civic LX 1990
Honda Civic LX 1991
Honda Civic Si 1989
Honda Civic Si 1990
Honda Civic Si 1991
Honda CRX Base 1989
Honda CRX Base 1990
Honda CRX Base 1991
Honda CRX DX 1988
Honda CRX HF 1988
Honda CRX HF 1989
Honda CRX HF 1990
Honda CRX HF 1991
Honda CRX Si 1988
Honda CRX Si 1989
Honda CRX Si 1990
Honda CRX Si 1991

At JDMuscle, we understand that fast and reliable shipping is crucial. With multiple distribution centers across the nation, most in-stock items are shipped within 1-2 business days. On average, you can expect delivery within 1-5 business days for in-stock items. Please note, however, that some products may ship directly from vendors, which could result in additional delays. Products sourced from overseas may also take longer to arrive.

Free Shipping over $199 Policy

• Free shipping is available only for the 48 contiguous states in the U.S.
• Ground shipping applies to regular-sized items only.
• Oversized items such as lips, hoods, and trunks requiring freight shipping are not included in the free shipping program.
• Some manufacturers may impose a shipping surcharge, which will be excluded from the free shipping program.
• The most accurate shipping costs will be displayed at checkout. If you believe the shipping cost is incorrect, please contact us at sales@jdmuscleusa.com for further review.

Carriers

We ship via FedEx, UPS, USPS, and DHL. While we strive to use the most efficient option, we cannot guarantee which carrier will deliver your order. Your items may arrive in multiple packages through different carriers.

Processing Time and Shipping Cut-off

Orders typically take 24 hours to process, with shipping cut-off at 3:00 PM EST. Transit times vary based on location and carrier. Some items, especially those requiring freight shipping, may have extended processing and delivery times. For freight shipping inquiries, contact us at sales@jdmuscleusa.com.

 

International and Special Shipping Considerations

• International orders are subject to higher shipping fees. If you would like to review your shipping cost, email us at sales@jdmuscleusa.com with your full address and items you plan to purchase.
• In some cases, shipping costs may be incorrectly calculated for international or oversized items. We reserve the right to adjust the shipping fee and will work with you to negotiate a fair cost if needed.
• Customers can challenge and request a review of international shipping fees, and we’ll do our best to find a lower rate where possible.
• Customs Fees & Import Taxes: The shipping charge you pay does not include customs fees or import taxes. These charges vary by country and are the customer’s responsibility. Please check with your local customs office for more details before placing an order.
• Shipping Cost Adjustments: Shipping rates fluctuate, and while we strive to provide the most competitive rates, there may be instances where the shipping cost you paid is significantly lower than the actual cost. In such cases, we reserve the right to request the difference to ensure we cover our basic expenses. We appreciate your understanding and will always aim to keep shipping costs as affordable as possible.

 

Address Modifications and Fees

• Any modifications to a shipping address after an order is placed may be subject to additional fees.
• For single, small packages, the flat fee is $20. For larger or multiple packages, the fee may be up to $60 or more.

Freight Shipping Guidelines

• Freight shipments require you to be present at the time of delivery.
• The delivery driver may provide a delivery receipt (Bill of Lading). It is crucial to inspect the shipment before signing.
• Carefully check the packaging for any visible damage (dents, punctures, rips) and notate it on the Bill of Lading.
• Open the package and inspect the product itself. If damage is found, document it in detail on the Bill of Lading, take photos, and contact the shipping company to initiate a damage claim.
• Do not refuse the shipment. Contact us at sales@jdmuscleusa.com for guidance.
• If the delivery driver is unable to wait for inspection, note this on the Bill of Lading.

Failure to document damages before signing the Bill of Lading will void any claims for refunds or replacements.

Pre-Installation Inspection Policy

We strongly recommend inspecting all parts or items upon arrival before installation. If you identify any damage, imperfections or missing components, report them immediately to sales@jdmuscleusa.com. Do not install the item. Please note that reports of damage, defects, imperfections or missing components after installation will NOT be honored.

Package Protection

We do our best to ensure your items arrive to you safely but sometimes things happen. If you utilized our Checkout+ feature, rest assured that your package is protected! With package protection, in the event that your package is lost, stolen, or damaged while in transit, we will replace it free of charge. To start a shipping claim, please click here.

Need Assistance?

If you have any concerns about shipping costs or transit times, or if you notice discrepancies during checkout, feel free to reach out to us at sales@jdmuscleusa.com. We’re happy to assist you and ensure a smooth delivery experience.

Limited Manufacturer Warranty*

Our policy lasts 30 days. If 30 days have passed since your purchase, unfortunately, we can’t offer you a refund or exchange. To initiate a return, please email us at sales@jdmuscleusa.com.

Eligibility for Returns

✅ Items must be unused and in the same condition as when received.
✅ Items must be in their original packaging.

Non-Returnable Items

❌ Gift cards
❌ Special-order or custom products

How to Initiate a Return

📧 Include the following details in your return request email:

Order Number

Item(s) to be returned

Reason for return

Important Notes:

Do NOT send your purchase back to the manufacturer.

Do NOT return any items without first setting up a return request with us.

Partial Refunds

Partial refunds may be granted under the following conditions:

⚠️ Items not in original condition, damaged, or missing parts not due to our error.
⚠️ Items returned more than 30 days after delivery.

Restocking Fees

Some manufacturers may charge a restocking fee, which includes but not limited to:

ManufacturerRestocking Fee

ESR30%

JDMuscle15%

PLM & Option Lab 20%

 

Cancellations

Before placing an order, please confirm availability.

Cancellations within 7 days may be subject to fees to cover third-party transaction costs.

Once the order has been processed (packaged or tracking generated), cancellations are not allowed. Eligible items may be returned instead.

Special-order items cannot be canceled.

Refund Process

🔄 Once your return is received and inspected, we will notify you of the refund status.
💳 Approved refunds will be credited back to your original payment method within 3-10 business days (depending on the payment provider).

Late or Missing Refunds

🔍 Check your bank statement — sometimes the refund may not appear as a new entry but as the disappearance of the pending charge. 📞 Contact your credit card or financing company — they may require additional time for processing.

If you’ve done all of the above and still haven’t received your refund, email us at sales@jdmuscleusa.com for assistance.

Sale Items

Only full-priced items are eligible for returns and refunds.

Exchanges

We replace items only if they are defective or damaged. To request an exchange for the same item, email us at sales@jdmuscleusa.com.

Gifts

🎁 If the item was marked as a gift when purchased and shipped directly to you, you will receive a gift credit for the return value.
📩 If the gift giver had the item shipped to themselves, we will refund the gift giver.

Return Shipping

📦 Customers are responsible for return shipping costs unless the item is damaged, defective, or incorrect (in which case we will cover shipping both ways).

Initial shipping costs are non-refundable.

Return shipping costs will be deducted from the refund amount.

For items over $75, consider using a trackable shipping service or purchasing shipping insurance. We are not responsible for lost or damaged items during return shipping.

Return Shipping Address: Please use the address provided in the RMA/return instructions, as it may differ from the initial shipping address.

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov