HTXJPN Gunma Black Sneakers

10 items left!

The Gunma Black is our new premium court shoe. 

Featuring ultra-soft full-grain calfskin leather sourced from a premium sustainable tannery, coupled with a breathable microfibre suede inner for comfort and wearability and a rigid heel panel for strength and support.

Bonus Customization Pack

Every pair comes with an Exclusive tin containing:

  • Second pair of laces in contrast white
  • Gold Lucky Cat Lace Charms
  • Chrome Turbo Lace Charms
  • Brushed Silver Gunma Lace Charms


100% 3oz Premium full-grain calfskin leather

Crystal PU Transparent window featuring 2 of Gunma's most famous mountain Touge runs, Japanese Rising Sun & Iconic Magnesium Wheel in the Heel.

Breathable Microfibre Suede removable moulded insole, with hand-stitched inner HTXJPN branding.

Breathable Microfibre Suede

Design Process

There is no doubt court shoes are on trend, everyone in our office wears them and they have been a long time on our to-do list.  When deciding to do our own take on the classic court shoe, we tore apart many pairs of shoes ranging from $99 to $500 luxury brands and took to the drawing board to build the ultimate sneaker.

  1. They had to be Quality Full Grain Real Leather.
    Synthetic is cheap to manufacture but wears badly over time and leaves your feet sweaty and smelly, we spent over 6 months sourcing and testing, with the final product full grain leather used coming from a premium sustainable tannery that supplies many high-end luxury brands. 
  2. They had to be value for money. 
    We're not a hype brand, our vision is always to create the most premium product for a good price.  Not only are these unique, but they are also one of the most affordable full-grain premium leather all-white on the market. 
  3. They needed to be comfortable for all-day wear.
    All the team have a pair, and we have been wearing prototypes for almost 12 months now, at the office, at the track, at the beach and in the car park. 
  4. They needed to have a high-top equivalent
    While most of the guys in the office wear lows, the boss prefers high tops. We are still testing them, and they should be launching mid-2023!
  5. They needed to be uniquely HardTuned JDM. 
    We are car guys, so we want automotive detailing and feature love for the areas of Japan we spend most of our time in.
  6. And finally...they needed to be customizable. 
    Again, we don't drive standard cars. why should our shoes not come with customizable options? We're keen to see what other personalization people do with their shoes!
    Fit & Sizing

    Standard US Sizing, regular-slim width.
    Natural Leather will relax with wear.

    Size Chart


    HTXJPN shoes fit true to US Mens sizing, however lean towards being a slimmer fit shoe. Please measure your shoes against our size guide to ensure a perfect fit!

    • If you have a wider foot we recommend sizing up
    • If you wear a half sizes we recommend sizing up
      (Usually US8.5? order a US9)
    • If you vary depending on brand we recommend sizing up
      (Usually US10 or US11?, order an US11) 
    US 5 6 7 8 9 10 11 12 13 14 15
    EU 38 39 40 41 42 43 44 45 46 47 48
    UK 4 5 6 7 8 9 10 11 12 13 14


    24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5
    SHOE WIDTH - CM 9.2 9.5 9.8 10 10 10.2 10.4 10.8 11 11 11.5

    Women's Sizing Info

    Generally, we recommend sizing down two size.
    Eg. If you are a US Women's Size 8, we recommend choosing US6


    Orders are dispatched from our Gold Coast HQ in Australia using DHL Express, DHL Mail & Australia Post.

    We dispatch five days a week and aim to process all orders within 24hrs.

    Certain products such as window banners are custom-made to order so may take a little longer to dispatch. On weekends & public holidays, orders will be processed next business day.

    Don't see a shipping option for your country at the checkout? 

    Due to recent increases in shipping we can no longer offer flat rate shipping to some regions. Please contact our support team here for a custom quote!


    FREE SHIPPING for all orders over AU $100 
      Tracking Estimated Time
    Standard YES 2-10 Days
    Express YES 1-4 Days


    FREE SHIPPING for all orders over USD $150
      Tracking Estimated Time
    Economy** NO 15-31 Days*
    Standard Tracked YES 10-21 Days*
    EMS Express YES 7-18 Days*
    DHL Express YES 2-7 Days


    FREE SHIPPING for all orders over GBP £140 
      Tracking Estimated Time
    Economy** NO 15-31 Days*
    Standard Tracked YES 10-15 Days*
    EMS Express YES 7-12 Days*
    DHL Express YES 2-7 Days

    EUROPE (Tier 1)

    FR, DE, IT, NL, NO, ES, SE, CH.
    FREE SHIPPING for all orders over EURO €160
      Tracking Estimated Time
    Economy** NO 15-31 Days*
    Standard Tracked YES 10-15 Days*
    EMS Express YES 7-12 Days*
    DHL Express YES 2-7 Days


      Tracking Estimated Time
    Economy** NO 15-60 Days*
    Standard Tracked YES 9-27 Days*
    EMS Express YES 8-21 Days*
    DHL Express YES 2-10 Days


    *Shipping times frames are provided by the courier based on recent data. These times are to be used as an estimate and are not a guarantee.

    **Economy packages are an untracked service, and therefore not insured. We cannot provide any delivery updates once the goods have been dispatched. For time sensitive or orders of value, we recommend using a premium service.

    In the event of a large online promotion or during Christmas and Black Friday our orders team & some countries postal systems can get quite backed up due to a massive influx of packages so you may experience slight delays during these periods.

    Local Tax / VAT Notice

    Please note that some countries (such as Europe and Canada) charge import duty / VAT which may be payable on delivery, these charges are the responsibility of the customer and are unfortunately out of our control. 

    We cannot pre-pay individual country taxes, and will not cover them if items are taxed on arrival. If local taxes are unpaid, the goods will either be returned to sender at the customers expense or destroyed. No refund will be offered until the goods have returned to HardTuned which may take some time.

    USA orders are not taxed and Australian orders have GST factored into the price. As of January 2021, UK orders under £135 will be charged VAT at the checkout.



    If for ANY REASON you are unhappy with your purchase we offer a 100% refund on the purchase price if returned within 30 days.

    We also offer a 30 day exchange/replace/partial refund policy on all our clothing, covering any manufacturing faults or problems. It covers things like zips, overlocking, hems, prints, stitching, fabric, embroidery & any damage that occurred during shipping.

    It unfortunately does not cover change of mind, damage from incorrect washing, rolling in oil while working on your car, or general wear caused by doing burnouts or play fighting with your pitbull.

    To contact us with a warranty claim or return please visit our
    Returns & Exchanges page