Advanced Pro Plus Racing Circuit Spec Coilovers - Subaru WRX & STi 2015-2021

Application Notes: 

• Fits 2015-2021 WRX & STi Models
• Please select desired coilover model, 2-way or 3-way when ordering
• Please select desired rear upper mount style when ordering
  

YSR USA Advanced Pro Plus Circuit Coilover System

Engineered for peak performance on the track, the YSR USA Advanced Pro Plus Circuit Coilover System is our top-tier, motorsport-grade suspension setup, developed specifically for competitive circuit racing. Designed with input from professional drivers and race engineers, this system is available in both 2-way and 3-way adjustable configurations, delivering superior adjustability, consistency, and precision handling under extreme driving conditions.

Whether you choose the 2-way adjustable version (rebound + compression) or the 3-way adjustable version (independent high-speed compression, low-speed compression, and rebound), this system gives drivers total control over suspension dynamics—allowing precise tuning for various circuit layouts, track surfaces, and driving styles.

Each kit is built to order with vehicle-specific valving and spring rates tailored to high-grip tarmac use. Whether you're dialing in balance at a technical course or chasing lap times on a high-speed track, the Advanced Pro Plus Circuit kit gives you the control and feedback needed to push limits confidently.

Key Features:

• 2-Way or 3-Way Adjustable Damping
  Choose from:
  
  
  • 2-WAY EXTERNAL RESERVOIR
    2-way adjustable dampers with independent rebound and compression control, ideal for serious track users seeking simplicity with performance.
    
    
  • 3-WAY EXTERNAL RESERVOIR
    3-way adjustable dampers featuring independent 17 clicks of high-speed compression, 20 clicks of low-speed compression and 33 clicks of rebound damping adjustment for maximum fine-tuning. 
    
    
• Monotube Damper Design
  Delivers consistent performance and superior heat dissipation—critical during extended sessions and endurance racing.
  
  
• High-Precision Remote Reservoirs
  External reservoirs allow increased oil capacity and thermal stability, ensuring damper performance stays consistent lap after lap
  
  
• Custom Spring Rates & Valving
  Every kit is tailored to your vehicle and race needs, offering ideal balance, grip, and compliance on tarmac surfaces
  
  
• Lightweight Construction
  CNC-machined components and aluminum shock bodies reduce unsprung weight without compromising strength.
  
  
• Camber Adjustable Top Mounts (on applicable models)
  Helps dial in aggressive track alignment setups for maximum front-end grip and tire contact.

Important Considerations When Choosing Circuit Spec Suspension

Pros:

• Choice of 2-way or 3-way adjustment to suit driver needs and tuning complexity

• Consistent, fade-resistant performance during long track sessions
  

• Built-to-order specs ensure optimal performance for specific vehicle setup and weight
  
  
• Improved lap times through superior grip and chassis control
  
  
• Enhanced steering feedback and cornering stability at high speeds
  
  
• Ideal for time attack, road racing, and professional-level motorsport applications

Cons:

• Not recommended for street use due to stiffer valving and higher NVH (Noise, Vibration, Harshness)

• Requires experienced setup and tuning for best results

• Higher cost compared to 1-way systems due to advanced features

• May need frequent adjustments to adapt to different tracks or conditions
  
  
• Reduced ride comfort outside of track environments

The Advanced Pro Plus Circuit Coilover System is a purpose-built tool for those who demand uncompromising performance and adjustability on the track. Whether you prefer the efficient control of a 2-way setup or the deep tuning capabilities of a 3-way system, this kit is designed to deliver professional-level handling and feedback for your podium pursuit.

High quality components are adopted to ensure product durability and stability. Each application is test fit and completely road tested to guarantee perfect performance and comfort.

Please note that ALL of our coilovers are hand built and made to order. Please allow 3-4 weeks for delivery.

**Photographs shown are stock photos; Actual items may vary in appearance or features. Please contact us for specific features of each kit.

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.

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.

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