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🔧 Own your ride: precision tools for the discerning cyclist.
The Park Tool BBT-27.3 is a 16-notch, 49mm aluminum bottom bracket tool designed for professional-level bike maintenance. Featuring a ratchet-compatible 3/8" drive and anodized finish for easy identification, it delivers precise fit and durability. Ideal for millennial cycling enthusiasts who value efficiency and quality, this tool empowers you to perform expert adjustments without the shop.












| ASIN | B09T7B6K1P |
| Best Sellers Rank | #121,687 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #391 in Bike Shop Tools |
| Brand | Park Tool |
| Brand Name | Park Tool |
| Color | Multi-coloured |
| Customer Reviews | 4.8 out of 5 stars 56 Reviews |
| Head Style | Box End |
| Included Components | power tools and accessories |
| Item Length | 49 millimeters |
| Item Package Quantity | 1 |
| Item Type Name | Tools and accessories |
| Item Weight | 2.72 ounces |
| Manufacturer | PARK TOOL |
| Manufacturer Part Number | BBT-27.3 |
| Material | Aluminum |
| Material Type | Aluminum |
| Measurement Standard | Metric |
| Model Number | 4003130 |
| Package Quantity | 1 |
| UPC | 763477001368 |
J**N
So important to have the right tools for the job
I have a bottom bracket where the ONLY way to tighten and untighten due to the width of the external BB being less than a millimeter is using two of these tools. One on each side and a friend to help turn while I hold the two tools on with a fair amount of pressure. The good news is that I don't have to take my bike to the shop for BB adjustments anymore. The bad news is that I had to purchase two of these tools. I had previously tried (unsuccessfully) to use this tool along with the flat handled counterpart tools. My bottom bracket is Wheels Manufacturing PF30-THD. These tools when paired up like I described above do a surprisingly good job given the extremely thin BB material to work with.
J**R
As advertised!
Another quality tool from Park. Perfect fit!
M**D
Well made, excellent fit
Works perfectly first time every time. Well made and doesn't damage parts
M**L
Worked when needed
It worked on a wheels manufacturing bb30. Needed it since there’s no standard for bbs anymore, added to my collection of rarely used tools
L**S
Works for Wheels Manufacturing Bottom Bracket
Great tool Park tool never disappointed you always get what you pay for, if you need to install a Wheels Manufacturing Bottom Bracket YES this is the tool and right size you need!!
O**K
Works very nicely
The tool's splines properly and securely engage the notches in the threaded BSA BB. It allows removal and installation without marring the BB. Various threaded BSA BBs have different diameters and numbers of notches, so check to make sure you get the right tool for the job.
R**L
Great tool. Quality build
Excellent BB tools (as expected) from Park. I own tons of bike tools and I only purchase these or the offerings from Wheels MFG. I like that Park color codes their BB tools though.
I**M
Bsa bottom bracket tool
As advertised work fine installing bsa bottom bracket
B**H
Solid, reliable, and functional
Fits perfectly and did the job with no fuss.
L**N
Innenlagerschlüssel von Park Tool
In Kombination mit dem Park Tool Werkzeug: BBT-RS ist es der absolute Hammer. Man kann es aber auch mit einer Knarre oder ähnlichen benutzen. Wie immer bei Park Tool sind die Sachen sehr gut dafür aber auch sehr teuer. Wer mehr Interesse hat, kann sich die Park Tool Sachen bei YouTube anschauen. Ich kann es nur empfehlen, aber sehr preisintensiv.
G**G
Super Werkzeug
Super Werkzeug!
Trustpilot
1 month ago
1 month ago