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This is the 25th Anniversary Disc Only Edition of our original Jack Flash dirt jump frame. Beefy, burly overbuilt and ready for a bit of serious airtime.

  • Frame material: Aluminium
  • Brake type: Disc, IS mount
  • Recommended fork travel: 120-130mm
  • Tyre clearance: 2.4 (26")
  • Frame weight: 2kg (medium)


Full Description
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Zesty Lime / One Size
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Matt Black / One Size
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It's been a long time coming but the day has finally arrived for Jumping Jack Flash to jump again!!

The Planet X Jack Flash is so deeply entrenched in the history of both the company, and the underground dirt jump community that you'll struggle to find someone who didn't own one, or knew someone who did. In fact, we know there's still plenty of the original model still jumping today!

Rock solid build with retro looks, square stays, external cable routing and rear disc mount mounts. We've updated the headtube to take a tapered steerer but other than that it's still an unashamedly retro 26" wheeled dirt jump bike.

Raid the shed and refresh your old 26er. Pub,Street or Jump bike the Jack Flash is the Jack of all trades.

  • QR 135
  • Head Tube 13cm
  • Top tube 58cm
  • Seat Tube 39.4cm

Frame essentials


Bottom bracket (Sram GXP)

Bottom bracket (Shimano Hollowtech)

Additional Information

Product Code:FRPXJF25D

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Sizing Guide

One Size

Sizing Notes

All frame size recommendations are approximate. A good fit will also depend on the correct choice of stem length, correct bike set-up for the rider and riding style.

Correct frame size choice can vary greatly with riders' torso length. If you have longer legs and a shorter torso, go for a slightly shorter stem. If you think you are borderline between sizes, and you have longer legs and a shorter torso, go for the smaller frame size. If you have shorter legs and a longer torso, go for the larger frame size to get the extra top tube length.

As the frame sizes increase, so does the length of the head tube. If you are inflexible or perhaps have a history of back problems, consider going for a larger frame size. This will increase the relative height of the handlebars making the position less “extreme”. The larger frame will also have a longer top tube, so you’ll need to compensate for this with a shorter stem.


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