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Cooler Master R4-L2R-20 120mm Green LED Case Fan 2000RPM 69CFM 19DBA 3/4 Pin

This product can only be exchanged or replaced with the exact same item.
Cooler Master R4-L2R-20 120mm Green LED Case Fan 2000RPM 69CFM 19DBA 3/4 Pin - 1
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Cooler Master R4-L2R-20 120mm Green LED Case Fan 2000RPM 69CFM 19DBA 3/4 Pin - 42177_l.jpg Customer Photos (0)

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SKU: 42177
Shipping Weight: 0.2lbs

Part #: R4-L2R-20AG-R2

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Product Videos [ Edit ]

Features [ Edit | History ]


Case cooling is becoming more essential these days. Quality fans with better airflow inside your chassis will give you a more stable system. The SickleFlow 120 with 2000 RPM is no doubt one of the best case fans in the market.

Quick Specs:
Air Flow 69.7 CFM
Application/Usage Case
Fan Diameter 1 x 120 mm
Weight (Approximate) 4.09 oz
Fan Bearing Type Long Life Sleeve Bearing
Height 1"
Width 4.7"
Depth 4.7"
Number of Fans 1
Fan Speed (rpm) 2000 rpm

Specifications [ Edit | History ]

Fan Information  
     Air Flow: 69.7 CFM
     Fan Bearing Type: Long Life Sleeve Bearing
     Fan Speed (rpm): 2000 rpm
     Number of Fans: 1
General Information  
     Brand Name: Cooler Master
     Manufacturer: Cooler Master Co., Ltd
     Manufacturer Part Number: R4-L2R-20AG-R2
     Manufacturer Website Address:
     Product Line: SickleFlow
     Product Model: R4-L2R-20AG-R2
     Product Name: SickleFlow R4-L2R-20AG-R2 Cooling Fan
     Product Type: Cooling Fan
Heatsink Information  
     Mount Type: Screw Mount
     Application/Usage: Case
Physical Characteristics  
     Depth: 4.7" (120 mm)
     Fan Diameter: 1 x 120 mm
     Height: 1" (25 mm)
     Weight (Approximate): 116 g
     Width: 4.7" (120 mm)

Customer Reviews of COOLERMASTER R4-L2R-20AG-R2

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding COOLERMASTER R4-L2R-20AG-R2 reviews.
Experience: 1 Months

Decent fan Verified OwnerVerified Owner


Good airflow
Somewhat Quiet
Green LED
Green LEDs are not that bright
Decent fan for its price

Experience: 4 Days

Great fans Verified OwnerVerified Owner


Excellent airflow
Look great
LED isn't too bight/overpowering
Great build quality
Comes with 4 pin molex plug if you need them
Pretty loud
Great fans, which look and perform great. My case is a lot louder now, but I guess that's my fault for running 8 of them.

Can't seem to manually control their RPMs through SpeedFan or any other software for that matter, but I don't think that's an issue with the fans.

Experience: 3 Days


Good price

Experience: 5 Days


Bought two of those to fit in an Orange case from BitFenix (plus a red one and a blue one)..
Very silent and provide a lot of air flow.
I would have prefer having orange led but this comes only in blue, red and green. Hope for more colours in the future.
Green fan in an Orange case is actually pretty nice so i am not disappointed.
Would buy it again without any hesitation.

Experience: 1 Days


Nice Colour of fan, Good Quality, only 1 cable compared to old which was 2
Screws didnt work, luckily had proper ones
Definitely would buy this case again, i really like the build quality, easy to install and replace my original case fans. These will easily replace the original Cooler Master Storm Trooper side fans

Experience: 1 Days


Good airflow
Quiet (3pin)
Good value in general for the price
Can be very loud!
The Green LED are not really bright...
If you don't use the 3pin connector and don't reduce the speed, they are really loud. You should maybe check if your motherboard have enough 3pin connectors and if the cable will be long enough.

This review was modfied by poster @ 01-13-16 09:06 AM

Experience: 2 Weeks


Colour looks fantastic, Very bright.
A little loud when I'm not wearing a headset.
The fan is really bright, it looks really nice in my razer edition H440. I have this as an exhaust fan for my build and it looks incredible.

Experience: 2 Months


quiet, cheap price, durable
This fan is really quiet compared to the fans that were preinstalled in my casing. The light isn't too bright or dim, it's just the right amount. It's been two months and I have not had any problems with this fan. Definitely will consider replacing my other fans with this one.

Experience: 2 Years


-Great price/quality ratio
-Great airflow
-Green light
-not quiet
-Make alot of vibration
Good cheap fan but not the best one.

Experience: 2 Months


Very bright green
Always on sale
Not too loud
Is an intake (Brings air in from front making other side ugly as an exhaust fan unless it's going to be looked at from a side window standpoint, then it looks good)
Buy it if you're looking for a good green fan with low dba. Looks great in windowed cases. Never buy if over $10, will go on sale

This review was modfied by poster @ 08-15-15 12:51 AM

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Messages about Cooler Master R4-L2R-20 120mm Green LED Case Fan 2000RPM 69CFM 19DBA 3/4 Pin

Stats do not look right... 19 for 90CFM? (Haxelon- Feb 17, 10, 8 Replies)
Estimated Time For Stock? (Ben_H- Aug 13, 09, 0 Replies)
hmmm... makes me woner (3000PPD FTWW!!!- Aug 09, 09, 1 Replies)

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Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.

Reviews from the Web

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Product Warranty

First 30 days limited warranty through The remainder of the one year warranty is provided directly by the manufacturer.

Support For USA, Canada, & Mexico 
Cooler Master USA
4820 Schaefer Ave.
Chino, CA 91710

Phone: 1-909-673-9880
Fax:  1-909-673-9882 or 9883

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GOVERNMENT & BUSINESS Laptop and Notebook purchases made with government or business POs can be returned typically within fourteen (14) days from original invoice date. Return will only be accepted with original packaging, accessories, cables, free gifts (if applicable), unopened software and manuals and is subject to inspection before warranty approval. Laptop and notebook with tampered serial numbers or UPC code will be denied returns. Please check with your B2B sales representative for specific terms and details.

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