Crack Trainer

(4 customer reviews)

£110.00 (exc vat)

The Wide Boyz Crack Trainer is a simple, lightweight, two piece adjustable crack system, for home use or training areas within climbing gyms. It can be used as a single unit for crack specific exercises and dialling in your technique or multiple units can be added together to do full boulder problems and circuits. The product comes in a flat packed style which is easily assembled and installed by the user. Soft Grip can be added and replaced at a later date by the user if required.

The jamming area is plain wood which provides a slick jamming feel. An excellent option for Power Endurance or Strength based crack workouts. For an easier jamming surface purchase with Soft Grip. See “Crack Trainer with Soft Grip” package deal here.

A note from The Wide Boyz:

“We climb using both a Soft Grip and a wooden jamming surface. Having both options lets us tailor our training and climbing sessions to the intensity we want, enabling us to dial in our technique and get stronger quicker”



  • Use only with rock shoes
  • Practice and train with a mixture of Wide Boyz tape (or crack gloves) and bare hands.
  • Always stop using before hands and feet become sore


The Crack trainer has two halves which you’re able to set at your desired width. Below are recommended Wide Boyz widths. (The dimensions below are just for guidance and you should set the Crack Trainer to coincide with the dimensions of your own hand/arm/leg/…head?)

  • 1 – 1.5 inch = thin hand size
  • 1.5 – 2 inch = tight hand size
  • 2 – 2.5 inch = hand size
  • 2.5 – 3.5 inch = baggy and cupped hand size
  • 3.5 – 4 inch = fist size
  • 4 – 5 inch = stacked hand size

Level and ability:

  • The Crack Trainer can be used for all abilities, from those just starting out wanting to purely practice technique, to those who’ve been jamming for years, but want to do some jam specific training exercises.
  • Example training exercises can be found on the card provided with this product
  • A range of different crack climbing techniques are demonstrated on our Youtube Channel.

 This pack contains:

  • 2 x Crack Trainer halves (24 Screw cups, 48 screws, 2 Base Plates, 4 Uprights, 2 Crack Walls, 4 End Caps, 2 Gripper Bars).
  • 1 x Glue
  • 1 x Assembly instruction card
  • 1 x Training card
  • Wide Boyz stickers

More details:

  • Dimensions – Length 800mm x height 180mm  x width 115mm
  • All edges and features aside from the crack are rounded for comfort and can be held, stood on and used as other options, to help diversify the climbing and make exercises harder or easier.


In stock

SKU: CKT-80-WD Category:

Additional information

Weight 6 kg
Dimensions 31.69 × 7.28 × 4.13 in

4 reviews for Crack Trainer

  1. Floris van der Gulden (verified owner)

    Reading the manual was actually harder than putting the volume together. It made me happy to put it together. I would give it six stars if there were torx screws instead of pozidrive screws.
    The only downside is that I didn’t become a world class crack climber the instant I felt the smooth surface of this plywood.

  2. Anonymous (verified owner)

  3. Julian (verified owner)

  4. Andrew DeChristopher (verified owner)

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Crack Trainer build Instructions