2026 NSR GT3 Series

GT3 Cars

Experience the thrill of GT3 Scale Racing, where passion meets performance! This exhilarating racing category has earned its place at the forefront of motorsport, captivating fans worldwide with its blend of cutting-edge technology and competitive spirit. GT3 vehicles are crafted from the world’s most iconic sports cars, expertly modified for the racetrack while retaining their unmistakable traits. Thanks to the Balance of Performance (BoP) system, every race offers a level playing field, ensuring that diverse manufacturers compete on equal terms. From Aston Martin to Porsche, the best in the industry come together for an adrenaline-pumping showdown!  Join the Austin Slot Car Club when we take the scale versions of these fantastic cars to our Road Track during the first half of 2026.

Join the discussion in our forums at: 2026 H1 NSR GT3 – Road Track

Series Manager: Brian H.
January through June 2026 (One round per month)
Course: Road Track

Entry Fee  $5 Premium members; $10 Standard; $15 Guest

Models

Current or legacy NSR GT-3 cars

Body

  • Required: OEM hard glass & cockpit.
  • Major body parts (i.e. windows, wings, lights/light covers) must be intact at the beginning of each race. Rear wings, splitters, and/or spoilers must be re-attached for each heat.
  • Small, vulnerable parts such as antennas, mirrors, wipers, or tow-hooks do not have to be replaced after race damage.
  • Mold marks, mounting pins, and flashing may be removed/smoothed.
  • White kits must have at least three race numbers affixed.  One on each door/side of car and one on a top surfaces such as the hood, trunk, roof, or windshield.
  • White kit bodies must be painted or clear-coated.
  • Due to the wide range of cars available, duplicate liveries are strongly discouraged. A duplicate livery is defined as the same decoration and race number.

Chassis

  • Any NSR chassis made for the selected body is permitted, but take note that our track seems to favor the Extra-Hard-Green or Hard-White chassis when grip is high. The OEM Black-Medium chassis can be tuned to work quite well and may be the best bet for versatility.
  • If the car is equipped from the factory with the drop-arm guide holder, that part must be fitted to the car.   The arm may be fixed with the applicable screw. Cars not equipped with the drop-arm (i.e. C8.R) are allowed.
  • Flash may be sanded and molding marks removed. Ballast for tuning weight-distribution must be placed on the inside of the chassis or motor pod.
  • NSR Guides -Wood (deep/long) screw mount (NSR-4859); OEM snap-in (NSR-4841). Shims and/or guide springs may be added adjust the depth of the keel/blade.
  • Open-Choice (i.e. not required to be an NSR part):
    • Motor Lead Wires, Grommets, Pick-up braid.
    • Body and motor pod screws
  • Expressly Prohibited:
    • Magnets
    • Ballast on the exterior of the car/chassis/motor pod.
    • Gaps between the body and chassis (or pod) exceeding 1mm (credit card thickness)
    • Clearance between the chassis and track that will cause contact between the two in a race.

Motor

  • Options:
    • Shark-25-EVO (OEM NSR-3043; 25K 180GM)
    • Shark-21.5 (NSR-3041; 21.9K 164gm)
    • Vintage Shark-22 (NSR-3001; 22.4K 168gm)
  • If the wrapper comes off or is damaged and the “can tattoo” for Model/RPM is viewable the motor can pass.
  • Trimming Endbell Side Shaft for tire clearance and shaving the can, on the drive side, near the Spur gear bushing for clearance is allowed
  • Expressly Prohibited: Changes to the armature, brushes, bushings, magnets.

Motor Pod

  • Any NSR sidewinder motor pod is allowed, but take note that our track seems to favor the Sidewinder OEM Red/Hard pod.
  • Gluing the motor to the pod is allowed. Older pods without screw holes to fix the motor in place may be drilled to take a motor fixing screw.
  • The pod must not protrude below the chassis by more than 0.5mm

Gears

  • Open-Choice:
    • Any NSR pinion and spur gear combination (some older NSR GT cars may not use the 6.45Pin-17.5Spur combo)
  • *Recommended* OEM Pinion: 6.45mm-DIA 11z  NSR-6911A (NSR does not have any other 6.45 pinions)
    *Recommended* Sidewinder Spurs OEM 17.5mm-DIA 32z NSR-6032;  6030, 6031 – 6037

Wheels

  • Required: OEM factory wheels  FRONT: (NSR-5003) 17dx8w  REAR: (NSR-5004) 17.25dx10w
  • Options: Porsche REAR (NSR-5003 17dx8w)
  • Permitted: Filling the Air-System-Gap with a foam insert such as the Thunderslot Foam Donuts THRMRFM001 or MRSlotcar foam insert.
  • Required: NSR brand wheel inserts; Type and style should match that typically seen on the model being raced.

Axles

  • Required: NSR brand solid axles; Bushings
  • Open-Choice: Stop collars, Spacers/washers
  • Prohibited: Independent rotating front axles.

Tires

  • Options: FRONT: No-Friction/Zero-Grips (NSR-5226) 18dx8w -or- (NSR-5201) 17dx8w
  • Options: REAR: (NSR-5230) 20dx11w Supergrip  -or- (NSR-5231) 20dx11w Ultragrip
  • Options: Porsche REAR (NSR-5206; 19dx10w Supergrip; Porsche)
  • Permitted: Tires may be glued.
  • Prohibited: Traction Compounds (bite, goop, glue)

 GENERAL

  • Power:
    • Group B: 10 vdc
    • Group A: 12 vdc (Pending confirmation by testing)
  • Mods Not Mentioned – contact Series Manager for legality (BEFORE the first race).