This course reduces the time it takes to become a professional customiser by years!

The ULTIMATE CUSTOMISING COURSE teaches you all the basics of customising, the fundamental theories and how to properly apply lead. 

Then we dive in to the deep understanding of customising and terms like Swing Weight, Twist Weight and Recoil Weight. 

Every subject is covered in this course, like understanding Pro Player Analysis and we even show you how to set up as a business, gain clients and how to become a world class customiser!

What You Will Learn From The Ultimate Customising Course

Learn To Customise Rackets Like a Pro!

  • How to customise rackets to the exact specs like we do for the pro's.

  • Understanding the effects of customising and how to adapt the specs to best suit players

  • Customise Grips; sizes, shapes and flares.

  • All the little tricks and nuances we use to make our rackets identical.

  • How to start a customising business!

  • And much more!

Some Quotes From Our Learners:

Don't take their word for it, try the course today risk free with 100% Money Back Guarantee!

“I've been stringing for some time now and always wanted to get into customising. I really enjoyed the Ultimate Customising Course! It was super easy to follow and I learnt everything I expected and more!”

New To CustomisingI

Chris Sanchez

“I started off knowing most of the basics of customising however the course was great as it has really helped me develop as a customiser. The way Nikki explains the terminology and puts it into examples is excellent.”

Advancing My Knowledge

Benjamin Mugot

“The Ultimate Customising Course was exactly what I was looking for. The info was really detailed plus I liked the fact that I could go over and watch lessons again if I missed anything!”

Just What I Was Looking For

Sandy Graeme

Nikki Roenn

Get to know your instructor:

In 2015 I founded Unstrung Customs together with my two partners in order to create a "different" type of stringing and customising company. From there we developed the business and continue to grow to the brand that you know today. Along the way we've been fortunate to string and customise for many top pros. My colleague takes care of Andy Murray's racket when he's home training and I'm fortunate enough to string Novak Djokovic's frames when he's at his training base.

Nikki Roenn

Course Master

Pricing Options

You can choose to pay in one or split the cost in 9 monthly payments.

Join our learners today!

See for yourself:

“I was a little unsure at first with the price, however with the money back guarantee I decided to go for it and I can happily say it was worth every penny!”

Worth it!

Mark Perrovski

“I decided to go for the full course to not miss out on anything, I can honestly say I learnt so many little tips and tricks to advance my knowledge, I 100% recommend to anyone looking to be a great customiser!”

Expanding My Business

Cameron Grantly

“I've been to a few workshops and so on to try to learn more on customising, however I found the course to be a much better way of learning. I learnt more in the course than I have done in all the workshops I've done combined! ”

Better Than Any Workshop

James Silverstone

Course curriculum

  1. 02
  2. 03
  3. 04
  4. 05
  5. 06
    • Introduction To The Unit

    • Gripping

    • Properly Fixing Butt Caps

    • Shaving Down The Grip

    • Grip Shaping with Tape

    • Removing Foam Shaft & Applying UPPS

    • Learn How to create Butt Cap Flares

    • Custom Trap Doors

  6. 07
    • Professional Racket Customising

  7. 08
  8. 09
    • Thanks for being part of the Ultimate Customising Course

Questions On The Course

Find out some more

  • Who's The Course For?

    This course is aimed for stringers and tennis enthusiasts that want to learn how to customise rackets like the pro's.

  • What Do You Need?

    To take full advantage of the course you will need some equipment. It's not completely necessary to have a full shop however the more equipment you have the more hands on you can get with the course

  • Will The Course Expire?

    No, none of our courses expire. So you can watch all the videos as many time as you like for as long as you like.


Check what you need for the course!

  • Electric scales

  • Balance Board

  • Swing Weight Machine

  • Customising Materials, lead tape, blue tac, tapes, note book

  • Other Equipment; Heat Gun, Staple Gun, Digital Callipers, Mouse Sander

Pricing Options

You can choose to pay in one or split the cost in 9 monthly payments.


Check out some of our other courses: