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Park Tool AK37 Advanced Mechanic toolkit



No-nonsense, top-quality home mechanic's tool kit, needs better Allen keys though

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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Park's AK37 toolkit is aimed at the enthusiast rather than the professional. The price tag of £300 means that you need to be serious about workshopping, but if you are it's a great basis for a home workshop, with a few provisos and additions.

Open the sturdy plastic toolbox and out spills a cornucopia of bike fettling bits and bobs – everything from chain whips to tire boots to cone spanners, all in one place. There's 37 'tools' in all, hence the name, though I'm not sure glueless patches really count.

Short of hardcore jobs like pressing in a new headset there's not much this toolkit can't accomplish straight off the bat, with a few additions: We'd like to see a rubber mallet (or Park's new shop hammer) and a pair of pliers added to the mix, but you'll likely have them knocking about anyway. For the most part the tools are all excellent; you'll wonder how you got by without a decent pair of cable cutters or a shop-quality chain tool. There's chain oil and grease thrown in too, and a chain cleaner that's easy to use and effective when filled with a decent degreaser. While we're on chains the CT-3 supplied isn't really designed for 11-speed transmissions, so if you're into your Campy you'll need to budget for a CT-4.2 chain tool and CT-11 rivet peening tool, and they don't come cheap.

The only real let-down is the Allen keys. Given that they're what you're likely to be using most we'd like to see more of the spend dedicated to them. It's not that the 3-way wrenches supplied aren't good – for the most part they're fine – but when the going gets fiddly they're no match for a good set of ball end keys, of which Park make a number. I'd happily forego the patches, cleaning brush and tire boot if it meant I could have an HXS-1 wrench set. We're using our AK37 kit in conjunction with a set of Newton professional hex wrenches, and it really does make all the difference.

Moan over: the AK37 is a really solid starting point for a home fettling setup. Get yourself a good workstand, a mallet, some pliers, a parts bin and a tooth-sucking mentality and you're in business. Our kit has halved the time it takes to set up bikes in the office, whilst simultaneously encouraging us to do more of it. Which has to be a good thing.


No-nonsense, top-quality home mechanic's tool kit that'll set you up for years of tinkering. Needs better Allen keys though. test report

Make and model: Park Tool AK37 Advanced Mechanic toolkit

Size tested: n/a

Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Park say:

Designed specifically for the home mechanic that wants the best, the AK-37 Advanced Mechanic Tool Kit is a special 37-piece collection of our finest “shop quality” tools, all packaged in a tough tool box. The AK-37 includes all the most frequently used tools, as well as some items a mechanic should not be without – basically, everything needed to perform most repair and maintenance tasks, from brake adjustments to headset overhauls, on the majority of current model bikes.

Tell us some more about the technical aspects of the product?

High quality toolkit containing the following tools:

* AWS-1 4, 5, 6mm Hex Wrench Set

* AWS-3 2, 2.5, 3mm Y Hex Wrench Set

* BBT-5/FR-11 Bottom Bracket and Freehub Lockring tool for Campagnolo®

* BBT-9 Bottom Bracket for 16 notch external crankset system cups (SRAM, Shimano, FSA, Truvativ, Race Face, Zipp, etc)

* BBT-22 Cartridge Bottom Bracket Tool (for 20 tooth internal splines, such as Shimano®, FSA®, etc.)

* CC-3 Chain Checker Chain Wear Indicator

* CWP-6 Crank Puller for Splined Octalink®, ISIS Drive®, and square-taper type

* CCW-5 Crank Wrench with 14mm Socket / 8mm Hex

* CBW-1 8 and 10mm Open End Wrench

* CBW-4 9 and 11mm Open End Wrench

* CL-1 Synthetic Blend Clain Lube

* CM-5 Cyclone Chain Cleaner

* CN-10 Cable Cutter

* CNW-2 Chainring Nut Wrench

* CT-3 Professional Screw Type Chain Tool

* FR-5 Cassette Lockring Tool for Shimano® and similar brands

* GP-2 Pre-Glued Patch Kit

* GSC-1 GearClean Brush

* PPL-1 PolyLube 1000 Grease

* PW-3 Professional Pedal Wrench

* SCW-13 13mm Professional Shop Cone Wrench

* SCW-14 14mm Professional Shop Cone Wrench

* SCW-15 15mm Professional Shop Cone Wrench

* SCW-16 16mm Professional Shop Cone Wrench

* SCW-17 17mm Professional Shop Cone Wrench

* SCW-18 18mm Professional Shop Cone Wrench

* SCW-19 19mm Professional Shop Cone Wrench

* SD-0 Shop Screwdriver #0 Phillips

* SD-3 Shop Screwdriver Straight Blade 3mm tip

* SD-2 Shop Screwdriver #2 Phillips

* SD-6 Shop Screwdriver Straight Blade, 6mm tip

* SR-1 Chain Whip and Freewheel/Lockring Wrench

* SW-0 Professional Spoke Wrench

* SW-1 Professional Spoke Wrench

* SW-2 Professional Spoke Wrench

* TB-2 Tire Boot

* TL-1 Tire Levers

Rate the product for quality of construction:

Park Tools are generally excellent, this collection is no exception

Rate the product for performance:

It transformed our workshop area: there's no substitute for a good set of tools that work. The only real let down is the Allen keys

Rate the product for durability:

Built to last, the box is good quality too

Rate the product for value:

Not cheap but you're getting a lot of good quality kit

Tell us how the product performed overall when used for its designed purpose

Very well. Excellent selection of tools that make workshop tasks a breeze.

Tell us what you particularly liked about the product

The general build quality and functionality of the tools

Tell us what you particularly disliked about the product

Disappointing Allen keys, we'd like a proper set of ball-ended ones instead

Did you enjoy using the product? Yes

Would you consider buying the product? Yes if i was serious about building and maintaining bikes at home

Would you recommend the product to a friend? Yes

Anything further to say about the product in conclusion?

The AK37 is the basis for a solid home workshop. You can add stuff to it, but there's not much you'll need to improve upon.

Overall rating: 8/10

About the tester

Age: 37  Height: 190cm  Weight: 96kg

I usually ride: whatever I\\\'m testing...  My best bike is: Genesis Equilibrium with Ultegra 6700

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Experienced

I regularly do the following types of riding: time trialling, cyclo cross, commuting, sportives, general fitness riding, fixed/singlespeed, mtb, Mountain Bike Bog Snorkelling, track

Dave is a founding father of, having previously worked on Cycling Plus and What Mountain Bike magazines back in the day. He also writes about e-bikes for our sister publication ebiketips. He's won three mountain bike bog snorkelling World Championships, and races at the back of the third cats.

Add new comment


DaSy | 13 years ago

Is the adapter to hold the cassette lockring tools really in the end of the chain whip?

If so that seems a really strange idea, as you will need to have the chainwhip to hold the cassette meaning you can't use the handle end to undo the lockring.

I know you can use an adjustable spanner on the lockring tool, but it never works as well.

dave atkinson | 13 years ago

yeah, we've appended an adjustable wrench. and yes, no fixie tools...

TRs Blurb n Blog | 13 years ago

It is unfortunately missing a Fixed-Gear Lockring Wrench and a single speed freewheel remover too by the looks of things.

And the inclusion of an adjustable wrench to fix up your neighbours old bike that is put together with imperial nuts and bolts.

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