

⚙️ Clean smarter, ride smoother — don’t let grime slow your grind!
The Finish Line Grunge Brush is a dual-sided bike chain and gear cleaner featuring horseshoe-shaped and long straight stiff nylon bristles designed to thoroughly clean chains, cassettes, and derailleurs. It works effectively with or without degreasers, helping cyclists maintain smooth shifting and extend drivetrain life with quick, targeted cleaning.



















| ASIN | B000BS02LS |
| Best Sellers Rank | #29,174 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #8 in Bike Cleaning Tools |
| Brand Name | Finish Line |
| Color | Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,812) |
| Date First Available | September 30, 2009 |
| Handle Material | Plastic |
| Included Components | Cleaning Tools |
| Item Dimensions LxWxH | 13.25 x 5 x 1.5 inches |
| Item Package Dimensions L x W x H | 12.64 x 5 x 1.34 inches |
| Item Weight | 0.1 Kilograms |
| Manufacturer | Finish Line |
| Material | Multi |
| Model Name | G50000101 |
| Model Year | 2009 |
| Number of Items | 1 |
| Package Weight | 0.11 Kilograms |
| Part Number | FIN-A-TOS027 |
| Size | 1 Count (Pack of 1) |
| Sport Type | Cycling |
| Style | Cleaning Tools |
| Suggested Users | mens |
| Warranty Description | Limited Warranty |
B**4
Easy and Effective
Simple and effective. I don't like reusing master links over and over and this tool is a great help in decreasing/cleaning y out r drive train without having to remove the chain.
J**N
Clean Bike Chain
Did everything I wanted it to do. It gets my chain cleaner than ever
L**C
Great brush, just didnt know it was for pedal bikes...
I know this one is more my fault than the part. This brush's brisels are to long to work well on a dirt bike chain, like a 520 size. The brush is a great design, I have had a few before. Just dont loan them out to your friends, they dont come back. If you are looking for the larger chain version of this, try "Simple Solutions The Grunge Brush RGB800" I guess my beach cruser chain will be grunge free. Hey amazon, can you correct this in the products title?
I**.
Perfect for cleaning a chain!
Are you looking for a tool to clean your chain, but you cannot find a quality tool in your budget? Look no further! I introduce to you... the Grunge Brush! Okay I'm done sounding like a commercial. This is just as good as those fancy tools that you see for like $40- $50 (for a quality one, not a cheap Chinese version that will last 2 seconds). It is somewhat difficult to get the chain in, but that tells me how well it's cleaning my chain! The brush on the end is perfect to clean you're cassette. Just spray some drivetrain cleaner on the cassette (not brakes unless you want to clean those too) and brush it then rinse with water.
B**B
Great brush for the price
Works great with degreaser solutions to clean chain and cassettes. Easy to hold and apply force. Brushes are durable.
J**.
Good Brush
The tail brush isn’t as firm as I would like but it’s still good
S**E
Grunge Greatness!
I love this brush! I don't know how people cannot like this device. I use it with my chain and it really cleans off all the tough debris. Of course, if you want your chain spotless then you have to use a degreaser and other cleaning products. That, however, is costly and takes a lot more time. I ride 3-4 times a week, sometimes more. The chain always needs to be maintained and once a week it should be thoroughly cleaned. This brush is perfect for after rides when you don't want to get crazy on scrubbing but want all the heavy filth to come off. It fits easily on the chain and is easy to hold while cranking the pedals to move the chain. It captures 3 sides of the chain and all that is needed is to reposition the device once to capture the last side. I personally think for the price, it does a great job. Plus, if you own an internal cleaner, you can use this for the 3 out of 4 cleanings to save on the different cleaning agents that are needed with it.
M**W
Somewhat effective depending of the amount of grime you let build up on your chain
It's useful, but was hoping it would behave a little more like a chain cleaner tool. That's not a fair comparison though. I guess I let my chain get to dirty because this brush doesn't clean it well and gums up... this is probably a user error, but thought that people might like to know that it's not a miricle product and you really do need to wipe your chain down between cleanings.
E**O
Boa qualidade e prático
C**T
Das Tool bekommt man sehr einfach über die Fahrradkette, es sitzt darauf gut eng an, so dass die Bürsten jederzeit die Kette berühren, wenn man die Kette, durch Pedalen drehen, hindurch zieht. So einfach und schnell habe ich die Fahrradkette mit keinem anderen Hilfsmittel bekommen, und ich habe schon vieles ausprobiert. Und die Bürste am anderen Ende (mit den langen Haaren) ist auch sehr praktisch zum reinigen von allen möglichen Teilen am Fahrrad.
G**O
Tuve mis dudas, el precio era un poco elevado para un simple cepillo, pero cuando limpias la cadena por primera vez, te das cuenta que vale cada euro, en combinacion con un desengrasante, me quedo una cadena casi casi nueva...
A**ー
チェーンの表は確かに綺麗になるのですが、内側の汚れはほとんど取れません。
R**L
If you wanna clean grunge from your chain and cassette this tool will do it This is the second one I've bought and makes your chain set as good as new (assuming regular cleaning)
Trustpilot
3 days ago
1 week ago