fits model: Si, Civic. make: Honda. year: 2006–2011.

( Brand: Competition Clutch ), ( Manufacturer Part Number: 2-800-STU-K20Z3 ), ( Type: Flywheel ), ( Flywheel Type: Solid ), ( Material: Steel ), ( Universal Fitment: No ), ( Transmission Type: Manual )
Introducing the 2-800-STU K20Z3 Ultra Flywheel, an exceptional upgrade for your 2006-2011 Honda Civic SI (K20Z3) engine. This high-performance flywheel, manufactured by STU Clutch, is designed to enhance power delivery, improve throttle response, and provide superior clamping force for aggressive driving conditions.
Crafted using state-of-the-art technology and materials, the Ultra Flywheel boasts a robust 2.8-kilogram (6.2-pound) weight, ensuring smoother power delivery and increased torque. The flywheel's increased mass reduces engine revolutions per minute (RPM) fluctuations, enabling more consistent power and improved engine response.
Designed specifically for the Honda Civic SI K20Z3 engine, the 2-800-STU Ultra Flywheel features a precision-machined surface, ensuring a perfect fitment and providing a firm, reliable connection to the engine crankshaft. The machining process guarantees a flat, true, and balanced surface for optimal power transfer and improved clutch engagement.
The Ultra Flywheel is further engineered to provide exceptional clamping force. The increased clamping force provided by the ultra flywheel results in reduced slippage during aggressive acceleration and high RPM driving. This reduction in slippage leads to better acceleration, improved traction, and overall improved performance for your Honda Civic SI.
Moreover, the 2-800-STU Ultra Flywheel is compatible with both stock and performance clutch kits, making it a versatile upgrade for various driving applications. With its superior design, unmatched durability, and improved performance, the Ultra Flywheel is an essential modification for any enthusiast seeking to boost their Honda Civic SI's power and driving experience.
Upgrading your Honda Civic SI with the 2-800-STU Ultra Flywheel not only enhances its powertrain performance but also contributes to a more enjoyable driving experience, responsive handling, and a remarkable increase in overall engine performance.
Pro: A heavier flywheel like the Clutch 2-800-STU-K20Z3 can lead to longer clutch life as it reduces the wearing rate of the clutch friction material.
2. Enhanced Performance:Pro: The ultra-lightweight flywheel often associated with OEM clutches might not provide sufficient engine braking, which can affect the overall driving experience. The heavier Clutch 2-800-STU-K20Z3 Ultra Flywheel can help increase engine braking effectiveness and result in improved shifting feel and response.
3. Smoother Engage and Disengage:Pro: The increased mass of the ultra flywheel can make it easier for the clutch pedal to engage and disengage due to its smoother "grab" and release.
4. Reduced Engine Revolutions on Start-up and Downshifting:Pro: The heavy flywheel can help reduce the engine RPM during starts and downshifts, making it easier to control the vehicle and minimize wheel hopping or power loss, especially during aggressive driving or track conditions.
1. Additional Cost:Con: Installing a Clutch 2-800-STU-K20Z3 Ultra Flywheel will incur an additional expense, as it's not a factory K20Z3 component. It might also require you to replace the pressure plate, flywheel bolts, and possibly the pilot bearing to ensure proper installation.
2. Weight Increase:Con: While an improved clutch life and smoother engagement are desirable features, adding more weight to the engine may slightly impact acceleration, especially at low RPMs or when attempting quick launches.
3. Ergonomic Considerations:Con: The additional weight and potentially increased clutch pedal effort could place more strain on the driver's leg during prolonged driving sessions, potentially leading to discomfort.
Conclusion: Whether or not installing a Clutch 2-800-STU-K20Z3 Ultra Flywheel is right for your 2006-2011 Honda Civic SI K20Z3 depends on your individual driving style and priorities. If you frequently engage in aggressive driving, track events or value improved clutch life and smoother shifting, installing the heavy flywheel can offer several advantages. Conversely, if you prioritize a lightweight and cost-effective clutch setup, the OEM engine configuration might be more suitable for your needs.
Recommendation: If you're a daily driver, or your vehicle primarily serves mild-duty use, the OEM flywheel should meet your requirements without the need for an upgrade to the Clutch 2-800-STU-K20Z3 Ultra Flywheel. However, if you push your Honda hard on the track, frequent heavy throttle use, or are an enthusiast seeking improved clutch life and smoother engagement, considering upgrading to the Clutch 2-800-STU-K20Z3 Ultra Flywheel as a worthwhile investment for your Honda Civic SI K20Z3.
The ultra lightweight steel flywheel STU suffix is recommended for forced induction and/or track and rally racing applications. Free shipping only applies to the contiguous 48 states. All flywheels can be resurfaced. Part # 2-800-STU - 8.8lb Steel Flywheel.
Buyer pays for return shipping. Competition Clutch Ultra Lightweight Steel Flywheel for 2006 2011 Honda Civic Si - K20Z3 Engines. This flywheel is machined with less material to assist in quicker revving capabilities. Competition Clutch flywheels are made of 4140 forged steel and a one-piece design.
This helps Significantly in reducing the chances of ring gear separation and friction surface war page.