Bespoke parts for the machines you love.

Custom‑engineered, 3D‑printed upgrades for Yamaha & BMW motorcycles, action cameras, photography, and ultralight backpacking — designed, built, and personally supported by the maker.

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Yamaha BMW GS / GSA All Motorcycle Chigee Products Innovv Products All Action Cam accessories Backpacking

New Arrivals

BMW GS Adv Cam Mount
BMW GS Adv Cam Mount
Mount your action or dash cam high and rock-steady, right over the headlight of your BMW F850/F900GS Adventure — unobstructed view, minimal vibration, and a clean run to your DVR wiring. Printed in matte carbon-fiber nylon with a subtle embossed GS logo. Camera options for most popular setups.
not rated $19.00 Add to cart
Sale!
BMW F800GS/F900GS & GSA ToolVault
BMW F800GS/F900GS & GSA ToolVault
Ditch the floppy roll-up bag. The GS ToolVault is a bespoke under-seat tool organizer for the BMW F800GS, F900GS (K81) and GS Adventure (K82) — carry more in the same space, everything in its place, tested hard on the kind of roads a GS actually sees.
not rated Original price was: $49.00.Current price is: $39.00. Add to cart
BMW Keyless Backup Hide-A-Key
BMW Keyless Backup Hide-A-Key
Never get stranded by a lost fob again. This stealthy sliding case hides your BMW backup RFID key right on the bike — protected, blended in behind the bodywork, and always there when you need it. Born from years of solo long-distance travel.
not rated $9.00 Add to cart
INNOVV Camera GoPro Mount
INNOVV Camera GoPro Mount
Run your INNOVV camera (25/26/28mm bodies) on any GoPro-style mount. A precision adapter into the huge GoPro accessory ecosystem, printed in engineering-grade carbon-fiber Nylon-12 for serious durability, heat and chemical resistance. (Not compatible with K5 or H-series.)
not rated $10.00 Add to cart
Yamaha 2021+ Tracer 9 and GT / GT+ Seat Slope Mod
Yamaha 2021+ Tracer 9 and GT / GT+ Seat Slope Mod

Level the aggressively forward-sloped seat on your 2021–2025+ Yamaha Tracer 9, 9 GT, and GT+. The Pro adjustable 6+2mm shim lets you dial in lean for spirited or long-haul riding — community-tested, stock hardware, fully reversible.

$28.00 Add to cart
Yamaha FJ-09/MT-09/Tracer 900 (GT) Seat Slope Mod
Yamaha FJ-09/MT-09/Tracer 900 (GT) Seat Slope Mod
Fix the forward-sloping seat on your 2015–2020 Yamaha FJ-09, FZ-09, MT-09, or Tracer 900/GT. Raises the front ~7mm for a neutral, less-tiring riding position with barely any change in seat height — all stock hardware, completely reversible.
$22.00 Add to cart
JK3D.us Sapphire Motorsports Camera Lens Protector V3.5
JK3D.us Sapphire Motorsports Camera Lens Protector V3.5
Protect your camera lens with genuine sapphire crystal — extreme scratch and impact resistance proven over 6 years in the field. Now fits Chigee AIO-6 and INNOVV N2 2K. Shrugs off the sand, grit, and rock strikes that destroy cheap acrylic protectors.
$25.00 Add to cart
Ford Ecoboost Radiator Drain Tool
Ford Ecoboost Radiator Drain Tool
Drain your Ford EcoBoost radiator without ever crawling under the car. This tool grips the petcock valve and, with a 3/8″ ratchet extension, lets you open and close it from the side. Fits EcoBoost 2.0L, 2.7L, and 2.3L (Edge, Ranger, and more).
not rated $7.00 Add to cart

Built by the maker, not a factory.

I’m Joe Kelly — I design, build, and ship every JK3D part myself from Salida, Colorado, and I personally stand behind each one. Thousands of riders and creators already trust JK3D. When you buy here, you’re buying direct from the person who made it.

Made in Salida, CO Thousands shipped worldwide — international, daily Direct maker support No 3rd-party design · No AI

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JK3D News & Updates

  • Big changes at JK3D.us!

    Joe Kelly

    This site was made by me in a rush back in 2021 when I designed a solution for a action camera lens protector that no one else had made. In the 5.5 years since then the site had aged and was really… blah. So I spent the last bit redesigning and testing a massive refresh on the UI. More changes are going to come, but I wanted to refresh the look and feel and will be updating the products, instructions, etc… over the coming week as well. Enjoy the new streamlined look and feel!

  • Tweaking cheap shipping

    Joe Kelly

    As I’ve been offering cheaper shipping options for the US and International customers, I ran into some snags with some post offices returning the packages to me and I had to re-send them as the expensive shipping. So I pulled the cheap shipping for a while as I tested a new mailer style and I think its working better now. So I’ve re-listed the cheaper no-tracking shipping options in the system!

    These packages are right at the edge of what cheap 1st class shipping will allow so its a knife edge to keep them in compliance.

  • Testing new shipping options

    Joe Kelly

    I am adding some new shipping options to save costs, but with the impact of no parcel tracking. I’ve had others ask for special low cost shipping options that may be slower and lack tracking info for cheaper International orders. This is under half the price of the normal shipping, but without tracking I wont be able support missing orders if they don’t make it, and they may take longer. If you order that option you will be accepting that terms and conditions.

  • Updated JK3D.us Lens Protector!

    Joe Kelly

    A couple small updates- I updated the design on the lens protector to trim about 1.5mm of size off of the bolt clamp to make it more streamlined, and also negotiated new rates on Sapphire which is allowing me to lower the price. I’ve sold over 700 of these lens protectors around the world and have not had a single return, or warranty claim. I am very proud of these high end and superior lens protectors!

See all past store updates & news →

Free and Shared JK3D Products and Designs:

Looking for free custom designs I’ve posted for everyone to use? Check out my Thingiverse page! Any of these can be printed as well via the custom services link at the top.