be quiet! Light Wings 140mm PWM Reverse ARGB Fan - BL134
be quiet!
be quiet! Light Wings 140mm PWM Reverse ARGB Fan - BL134
The be quiet! Light Wings 140mm PWM Reverse ARGB Fan is built for silent show builds and gaming systems that need high cooling performance without the noise. Its reversed blade design works as a side or bottom intake, and dual-zone ARGB lighting with 20 LEDs lets you customize the look from every angle.
Why this product
Reversed blades cut turbulence noise
Seven silence-optimized reversed blades reduce noise-generating turbulences while maintaining high airflow—ideal for intake positions where standard fans struggle.
Just 25.5 dB(A) at full speed
Achieves powerful cooling without the whine. The highly optimized impeller and rifle bearing keep operation remarkably quiet even under load.
Dual-zone ARGB lighting
Front and rear illumination with 20 addressable LEDs lets you create a unique look. Controlled via standard 5V 3-pin ARGB headers on most motherboards.
PWM speed control
4-pin PWM connector allows motherboards and controllers to ramp cooling up when needed or dial it down for silent operation.
60,000-hour bearing lifespan
Rifle bearing design is built for longevity, with a 3-year warranty backing the drive.
- Size140 × 140 × 25 mm
- Speed at 100% PWM1300 RPM
- Airflow at 100% PWM51.4 CFM (87.3 m³/h)
- Noise level at 100% PWM25.5 dB(A)
- Connector4-pin PWM + 5V 3-pin ARGB
- Weight241 g
- Warranty3 Years
- SKUBEQ-858
- EAN4260052192894
- Fits any 140mm fan mount on PC cases, radiators, and chassis with standard screw holes.
- PWM speed control works with any motherboard or fan controller featuring a 4-pin PWM header.
- ARGB lighting integrates with motherboards and software supporting 5V 3-pin ARGB headers—check your board or controller manual.
- Operates safely at 5–13.2 V DC, tolerating slight overvoltage scenarios common in modded or overclocked systems.
- Reversed blade orientation is optimized for intake; using it as an exhaust fan may reduce effectiveness.
Best for
- Silent PC builds and quiet workstations where noise under 26 dB(A) is the priority.
- Case intake positions (side or bottom) where reversed blades excel at drawing air with minimal turbulence.
- RGB-lit show builds and custom gaming systems where dual-zone front and rear lighting is visible.
- Setups requiring long-term reliability, with a 60,000-hour bearing lifespan and 3-year warranty.
Trade-offs
- Exhaust-only configurations; reversed blades are optimized for intake and may underperform as exhaust.
- Builds with no ARGB header or PWM fan connector on the motherboard or controller.
- Extreme overclocking requiring sustained airflow above 51.4 CFM or static pressure above 1.1 mm H2O.
Light Wings 140mm PWM Reverse Black offers impressive illumination for a vibrant unique look, strong performance and quiet operation with efficient cooling.
Light Wings 140mm PWM Reverse Black offers ARGB lighting at the front and rear. The subtly lit ring at the back combined with the bright one at the front make for a magnificent appearance from every angle. 20 ARGB LEDs give you many opportunities to individualize your PC build.
With optimization for maximum airflow, Light Wings 140mm PWM Reverse Black is the right choice for any case configuration that demands high cooling performance. Its 7 airflow-optimized and reversed fan blades not only reduce noise-generating turbulences but also ensure Light Wings 140mm PWM provides the performance that is needed, even in demanding configurations.
A highly optimized impeller achieves the silent operation be quiet! is famous for. With a noise level of 25.5dB(A) at maximum fan speed, it proves that instead of being a replacement the lighting is an addon to very silent and powerful operation.
All features combine to make Light Wings 140mm PWM Reverse Black the fan of choice for silent show cases and gaming systems alike.
Pulse Width Modulation (PWM) allows compatible 4-pin controllers, including those built into many motherboards, to intelligently vary the speed and thus the noise level of the fan. With PWM the system can ramp up the cooling when it's needed, or operate in maximum quiet mode when it's not.
General
| Brand | be quiet! |
|---|---|
| Model | Light Wings 140mm PWM Reverse |
| Color | Black |
Fan
| Size | 140 × 140 × 25 mm |
|---|---|
| Bearing Type | Rifle Bearing |
| Blade Design | 7 silence-optimized reversed blades |
| Fan Connector | 4-pin PWM |
| Operating Lifetime (MTBF) | 60,000 hours |
Performance
| Speed at 100% PWM / 12V | 1300 RPM |
|---|---|
| Airflow at 100% PWM / 12V | 51.4 CFM / 87.3 m³/h |
| Static Pressure at 100% PWM / 12V | 1.1 mm H2O |
Acoustics & Power
| Noise Level at 100% PWM / 12V | 25.5 dB(A) |
|---|---|
| Rated Voltage | 12 V DC |
| Operating Voltage Range | 5 – 13.2 V DC |
| Input Power | 3.8 W |
| Current Consumption | 0.08 A |
Lighting
| LED Type | ARGB (addressable RGB) |
|---|---|
| LED Count | 20 LEDs |
| Lighting Zones | Front and rear |
| ARGB Connector | 5V 3-pin |
| LED Current Rating | 0.67 A |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.