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LUNA Wrench BBSHD and BBS02 Mid Drive Installation Tool

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Product Description

  • Makes Installation and removal of BBS02 and BBSHD a snap
  • Designed by Luna 
  • Lovingly CNC Made in California
  • Hand Polished by Luna Guys
  • Stainless Steel 
  • Fits the inner and outer rings of the BBSHD and BBS02
  • See product images for dimensions


Luna did their own unique design on the archaic Bafang Tool Kit to make it more affordable and more usable.   The Bafang installation kit retailed for over $100 (we sold it for $65) and this tool we think is better at under $30.

Not only that because of its thin no-nonsense design, this tool is cheap and easy to ship in a flat rate envelope, making it more affordable especially for our international customers.  

The only hard part about the Bafang BBSHD or BBS02 installation is you need a special wrench to install them.  This tool has been custom machined out of stainless steel  to make installing and tightening the inner and outer rings on the BBS02 and BBSHD easy.  If you are an ebike shop you will probably want these tools so you won't have to risk scratching the paint on the units when installing them

Product Reviews

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Showing reviews 1-20 of 42 | Next

  1. Not the Best

    Posted by Unknown on Aug 21st 2017

    Instead of waisting time cutting out "luna" cut out a 1/2 inch square in both ends of the handle so a torque wrench can be applied and I believe one could actually tighten the lock nut with it. I purchased mine "at a discount" with my bbshd for $20, I'm afraid to ask how much this peice of metal costs at full price. Very minor disappointment though considering I bought nearly $1700 worth of products and my only compliant is a $20 wrench.

  2. Worked a couple times, then bent

    Posted by Unknown on Aug 4th 2017

    I managed to bend the outside ring side into an oval when installing the inside ring. It's probably good for one or two uses, but if you're going to being doing maintenance on your bike (and let's face it, you are), it might be best to get the better tool. I just purchased the better tool here. Spend the extra money up front.

  3. Tool

    Posted by Gunnar on Aug 1st 2017

    Works good

  4. works just fine

    Posted by rezdog on Jul 25th 2017

    tightened up those odd sized rings just fine. if i made a living doing this i might opt for the heavier duty tool.

  5. Better Than Expected

    Posted by Steven E Braun on Jul 21st 2017

    Although it is a bit difficult to really crank down on this wrench and you can't apply the proper torque value, for the price, it is solid and you can hammer it with a rubber mallet to get things tight. It works!

  6. Made installation a breeze!

    Posted by Chris on Jun 7th 2017

    I bought my first mid drive, a BBS02, and had it installed within 20 minutes with the aid of this wrench, some experience with ebikes, and a set of one to three piece crank adapters.

    If there was an option for an open-ended wrench to tighten the nut once the pedals are mounted to the cranks it'd be perfect.

  7. Excellent

    Posted by Unknown on May 25th 2017

    Solid tool

  8. Would have been lost without it.

    Posted by Josiah on May 18th 2017

    This tool made the install and multiple adjustments I had to make a complete breeze. I'm so happy I got this with the kit.

  9. gets the job done

    Posted by Unknown on May 17th 2017

    it is not a well finished tool, but it gets the job done, and that's what counts.

  10. Handy tool

    Posted by Bob on May 16th 2017

    Nicely made tool. You could add a 1/2" square hole 1/2" from the spanner end for use of a 1/2" drive torque wrench and a 3/8" square hole 1/2" from the lock nut end for a 3/8" torque wrench. Using a torque wrench shows more class than using a hammer.

  11. Perfect

    Posted by Unknown on Apr 23rd 2017

    It is very hard to get this nut tight enough with out this wrench .

  12. Works as advertised........rough finish

    Posted by Scott on Apr 6th 2017

    Works as promised and tightens my bbs02 but perfectly. A work of art..... sort of.... the finish is rough with jagged edges and burn marks. 20 bucks I guess it's worth it.

  13. Highly recommended

    Posted by Dennis on Feb 28th 2017

    This tool is nicely made and seems like a necessity to tighten the lock ring for the motor. Buy it with the kit for a discount.

  14. nice tool

    Posted by jill vaccaro on Feb 17th 2017

    high quality..good addition to your tool kit

  15. The 4 point side needs to have offset , so if you flop it , you get more combination

    Posted by scott M on Feb 12th 2017

    The tool bottom out on frame and could not go back to the next cog, if it was off set you could flip the wrench to get more combination.

  16. handy wrench

    Posted by Unknown on Feb 9th 2017

    Good quality wrench that is two tools in one.

  17. Glad to have it

    Posted by Les Phelps on Jan 29th 2017

    Videos show installing the BBS02 with a "spanner" wrench. The spanner is generic, not a specific fit, has one tooth and does not appear strong enough to properly tighten the friction plate. Plus, spanner wrenches are just hard to find locally. I consider the Luna Wrench a must have for installing the BBS02.

    Further, LunaCycle gets kudos for offering the wrench. Other e-bike kit websites that I've visited don't help you with this part of the installation process.

  18. Great wrench

    Posted by Philip W.Gold on Jan 28th 2017

    For the cost of the wrench it works great recommend it to anybody

  19. Luna Wrench BBSHD and BBSO2 Mid Drive Instalation Tool

    Posted by Maarten Keijzer on Dec 26th 2016

    Bought 2,1 is covered with all this Metal Shot.Not to happy about that.It's a long way from Adelaide Sth Australia to change it.The other was very good and the other one from Luna Mate was very good also.

  20. perfect fit !

    Posted by Ronny on Dec 18th 2016

    finally a tool i can pound with a rubber hammer because it snug fits : i added some loctite : now the bbshd has no more sagging.
    had to unscrew them yesterday : even with the loctite it worked

Showing reviews 1-20 of 42 | Next