RACE TECH 1235150.02 Frrs Reactive Springs Spacers Top T/o 10X35 1.5K

( Brand: Race Tech ), ( Manufacturer Part Number: 1235150.02 ), ( Part Type: Spring Spacer ), ( Performance Part: Yes )

Review RACE TECH Frrs Reactive T/o Springs 10x35 Spacers 1.5k Top Out fits 2020

The **Race 1235150.02 FRRS Reactive Top-Off (T/O) Springs** paired with **10x35mm spacers** and a **1.5kN (1500 kgf) load capacity** represent a high-performance suspension upgrade designed for drivers seeking enhanced handling, comfort, and customization in their vehicle s rear suspension. These springs are engineered specifically for the FRRS (Front-Rear Reactive Suspension System) setup, a progressive coilover system that dynamically adjusts stiffness based on load and road conditions, ensuring optimal ride quality and responsiveness. The **10x35mm coil diameter** strikes a balance between compactness and durability, allowing for a tighter spring rate while maintaining sufficient strength to handle aggressive driving, high-speed stability, and heavy loads without compromising longevity. The **1.5kN load capacity** indicates these springs are built to support substantial weight, making them ideal for performance vehicles, lifted setups, or applications where additional support is required such as towing or heavy-duty applications while still delivering a refined, adaptive ride. Whether installed on a daily driver for improved cornering and damping control or on a track-focused vehicle for precise feedback and reduced body roll, these springs integrate seamlessly with the FRRS system to provide a **progressive, load-sensitive suspension experience**. The inclusion of **10 spacers** allows for fine-tuning the spring preload and ride height, enabling drivers to dial in the perfect balance between ground clearance, stiffness, and comfort. Perfect for enthusiasts who demand both performance and versatility, these components are a testament to Race s commitment to engineering solutions that elevate both driving dynamics and everyday usability.

### **Pros and Cons of buying a Race 1235150.02 FRRS Reactive Top-Off Springs (10x35) with 20 Spacers (1.5k Top)**

1. **Improved Ride Quality** The FRRS (Front Reactive Rear Suspension) system is designed to enhance comfort by absorbing road imperfections more effectively than stock springs. The "reactive" design helps isolate the chassis from bumps, reducing fatigue on long drives.

2. **Better Handling and Stability** These springs are engineered to work with the FRRS system, which can improve weight distribution and cornering performance. The progressive rate of the springs helps maintain stability at higher speeds while still allowing for a smoother ride.

3. **Compatibility with 1.5k Top** The kit is explicitly designed for the **1.5k Top** (likely referring to a specific vehicle model or tuning level, such as a BMW 1 Series M135i or similar high-performance variant). This ensures proper fitment and avoids clearance issues with wheels, brakes, or other components.

4. **Durability and Performance** Race Engineering is a reputable brand known for high-quality suspension components. These springs are built to withstand heavy loads and repeated stress, making them suitable for both daily driving and track use.

5. **Increased Load Capacity** The 10x35 spring configuration (likely referring to a 10-turn, 35mm coil) provides a stiffer yet controlled rate, which can improve handling under load (e.g., towing or heavy cargo) while still offering a comfortable ride.

6. **Easy Installation** The kit includes spacers (20 units), which can help fine-tune ride height and alignment. This allows for adjustments without requiring additional hardware, simplifying the installation process.

7. **Enhanced Resale Value** Upgrading to an aftermarket suspension system like FRRS can make your vehicle more appealing to buyers who prioritize performance and comfort, potentially increasing its resale value.

8. **Compatibility with Other FRRS Components** If you plan to further modify your suspension (e.g., adding FRRS dampers or sway bars), these springs will integrate seamlessly with the existing system.

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1. **Cost** High-quality suspension components like these are not cheap. The price point may be prohibitive for budget-conscious buyers, especially if other modifications are needed (e.g., new shocks, alignment, or wheel spacers).

2. **Installation Complexity** While the kit includes spacers, installing FRRS springs may require professional help, especially if you lack experience with suspension work. Improper installation can lead to alignment issues, uneven tire wear, or even damage to the vehicle.

3. **Potential Ride Harshness** While the FRRS system is designed to be smoother than stock, some drivers may still find the ride firmer than they prefer, especially on rough roads. This is subjective and depends on personal preference.

4. **Alignment Requirements** After installation, a **full 4-wheel alignment** is strongly recommended to ensure proper wheel contact and tire longevity. This adds to the overall cost and effort.

5. **Limited Off-Road Use** These springs are optimized for on-road performance and may not provide the same level of articulation or comfort as dedicated off-road springs. If you frequently drive on rough terrain, you may need additional modifications.

6. **Potential for Over-Steering or Under-Steering** Stiffer springs can alter the vehicle s weight transfer characteristics. If not properly tuned (e.g., with dampers or sway bars), this could lead to less predictable handling, particularly in aggressive driving scenarios.

7. **Warranty and Return Policies** Some aftermarket suspension parts may not come with a full warranty, or returns may be difficult if the kit doesn t meet your expectations. Always check the seller s policies before purchasing.

8. **Compatibility Concerns** While the kit is designed for the **1.5k Top**, there is always a risk of misfitment if the vehicle has been previously modified (e.g., lowered, lifted, or equipped with aftermarket wheels). Double-check measurements before buying.

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The **Race 1235150.02 FRRS Reactive Top-Off Springs (10x35) with 20 spacers** is a high-quality upgrade for vehicles equipped with the FRRS system, particularly those aiming to balance comfort and performance. The kit offers noticeable improvements in ride quality, handling, and load capacity, making it a strong choice for enthusiasts who prioritize a refined yet sporty suspension setup.

However, the investment is significant, and installation requires careful attention to detail. If you re not experienced with suspension work, professional installation is highly recommended. Additionally, the firmer ride may not suit everyone, and alignment adjustments are necessary post-installation.

- You own a vehicle compatible with the **FRRS system** (e.g., a BMW 1 Series M135i or similar).

- You want a noticeable improvement in ride comfort and handling without sacrificing too much stability.

- You re willing to invest in professional installation and alignment.

- You plan to use the vehicle for both daily driving and light track or performance use.

- You re on a tight budget, as cheaper alternatives (e.g., stock springs with spacers) may suffice for mild upgrades.

- You prefer a very soft or overly compliant ride, as these springs are progressive and firmer than stock.

- You lack experience with suspension modifications and cannot afford professional installation.

- Your vehicle has been heavily modified in ways that may conflict with the FRRS system (e.g., extreme lowering or aftermarket wheels).

**Final Verdict:** This is a **solid choice for enthusiasts** who want a premium suspension upgrade that enhances both comfort and performance. Just ensure proper installation and alignment to maximize benefits.

Details:

Brand new, package is unopened. Please view all photos.

part #: 123515002 price

• $32.15

specifications accperformanc:

• for years: 2020
• brand: Race Tech
• mpn: 1235150.02
• part type: Spring Spacer
• performance part: Yes

seller accperformanc:

• city: New London, Connecticut
• # reviews: 775
• rating: 100.0%

returns accperformanc:

• policy: No Returns

shipping accperformanc:

• service: USPS Ground Advantage
• carrier: USPS
• transit: 6-9 Days
• class: Standard
• cost: $0.00
• type: Calculated

payments accperformanc:

• other
• wallet: Apple-pay
• credit card: Discover

offer accperformanc:

• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: February 19, 2026

general accperformanc:

• condition: New
• Parts Accessories > Permance Racing Parts > Accessories

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