Masterpiece Frenzy and Rumble – Leg Mod Guide

Those of you who have these should already know this, even though every review of these I’ve seen has glossed over it, but Masterpiece Frenzy and Rumble barely have any forward leg movement.

They can do the reverse can-can easily, but try to get them to sit down and they look like they’ve got hemorrhoids.

That can make for some awkward piledriving poses, although cool ones can be achieved.

But there is an easy way to fix it. The MP Frenzy and Rumble leg mod takes less than a minute to do for each of them, and greatly improves the articulation. It turns a weak foot forward into a full on kick ass kick.

The problem is that Takara decided to put a section of plastic on the rotational joint that stops it from moving past a certain point, because it pushes up against the post with the balljoint.

That section of plastic is what we’re going to cut off. :)

Here’s a diagram to illustrate.

Before And After

And here’s an actual picture using Masterpiece Rumble to show where to cut for the leg mod.

Trim Red Corner

Remember how I said this MP Rumble and Frenzy leg mod takes less than a minute to do for both of them?

That’s because all you need to do is take a pair of flush cutters and chop off the corner that’s getting in the way of the balljoint post.

Rest Flush Cutters On Pink Section

Put the flat side of one blade against the rounded joint that’s been colored pink in the picture, and use that to level the cutters.

Make sure you’re using a sharp pair of flush cutters, and do the cut quickly with a firm squeeze. That will keep the plastic from developing any white stress marks. If any do happen, just blast it with a hair dryer and the discoloration should go away.

My flush cutters aren’t exactly new, but a quick and firm squeeze snipped off that plastic section easily.

MP Frenzy And Rumble Leg Mod After Cut

It may look a bit rough in that picture, but that’s zoomed in with the details enhanced. Masterpiece Frenzy and Rumble are tiny, and the leg mod is only noticeable if you are looking for it.

And that’s it for the Masterpiece Frenzy and Rumble Leg Mod. After this fix is done, their hips can easily and smoothly bend completely forward!

MP Frenzy After Leg Mod


Did you enjoy the mod guide? Do you hate flush cutters and only use dremels?


Leave a comment and let me know.

~Matt Booker

14 thoughts on “Masterpiece Frenzy and Rumble – Leg Mod Guide


    Great mod though. I’m not sure I have the courage to try it, but your pics with the added articulation are awesome.

  2. Maple syrup is completely overrated! :D I’ll have a tiny bit on there, but too much and it’s awful.

    And thanks. If you can find a pair of flush cutters, this mod’s really hard to screw up. Honest. :)

    ~Matt Booker

  3. I eat my pancakes like a real cassette-con would*, with flush cutters! And 90 weight gear oil**.

    *Do they eat pancakes, and why?

    **Not really, but it sounded cool.

  4. Just as long as you’re not one of those people that put gear oil on cesium salami.

    ~Matt Booker

  5. You actually post a mod on a transfuamah that I have and its on a fragging MASTERPEICE? Buuuuut that would help a lot. It really gets frustrating trying to pose Frenzy (yeah, Frenzy!) with his pile drivers when the legs don’t bend right. Guess I’ll buy some flushcutters.

  6. Not a problem! :) Flush cutters are cheap and if you have a Walmart or a store with a craft section, you can usually find them there.

    ~Matt Booker

  7. I haven’t had much problems getting the leg to bend forward, but I can certainly consider it…as soon as the blue one gets his skidplate over here with Springer.

  8. I’ve seen a few people that had no issues with the hips on their MP Frumbles. There’s probably some kind of molding variance, because theirs look to have the same design.

    But we’ve seen these kind of squared off joints before, and they’re used to keep a part from rotating past a certain point. It doesn’t make a lot of sense for them to have done that, though. Why wouldn’t you want the legs to move completely forward?

    Either way, the legs on mine definitely needed this mod. But only do it if yours needs it. :)

    ~Matt Booker

  9. The blue one works fine too. Though Buzzsaw’s wings are considerably more positively responsive to being folded/unfolded than Laserbeak’s were… Hopefully if they’ve learned anything from the cassettes it’ll show with Blaster’s buddies when they get to him. ‘Cause it’d be silly to have this problem with Eject and Rewind!

  10. Glad both of yours were okay. When I got Buzzsaw, it was fine except the camera was misaligned, but that was easy enough to fix.

    I don’t think I’d buy an MP Blaster, but I’d buy an MP Ramhorn and Steeljaw. :)

    ~Matt Booker

  11. That would hinder the backward leg movement, and the legs have to move backward to transform into tape mode.

    ~Matt Booker

  12. I found that a pair of heavier-duty nail clippers can achieve the same thing. Like with the flush cutters, just make sure that one side of the clippers is resting against the inner piece of the hip joints. (For some reason, my flush cutters weren’t working too well.)

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