SuperNats XXVIII

TBA

2026 Winter Series

TBA

2025 Pro Tour

13DAYS

SKUSA Mexico

20DAYS

2025 PKC

28DAYS

2025 TSRS

76DAYS

Superkarts! USA - Rulebook & Updates
Rulebook
Please make sure you have the most current version of the rulebook.  A list of the current changes is now included right after the table of contents. All changes in the rulebook are highlighted yellow. We will keep at least 1 year of change logs in the back of the rulebook for reference.

alt 2025 SKUSA RuleBook
Current Version: 2/13/2025
alt Engine Spec: IAME SKUSA Shifter Engine (SSE)
Current Version: 2/25/2025
alt Engine Spec: IAME X30
Current Version: 2/25/2025
alt Engine Spec: IAME KA100
Current Version: 2/25/2025
alt Engine Spec: IAME Mini Swift
Current Version: 2/25/2025
alt Engine Spec: IAME M1 Bambino
Current Version: 5/25/2025 Supplemental Rules
Current Version: 5/30/2023HS-325A Carb Specs
Current Version: 5/25/2025
alt Legacy Spec Honda Shifter Rules
Current Version: 01/01/2022

Rulebook Updates & Clarifications

The updates below generally contain revisions that will be included in the next rulebook update, but didn't warrant an update to the rulebook on their own. When in doubt, please refer to the date the update and the rulebook were published.
1 Excessive Carbon Buildup in Exhaust Ports Wednesday, 05 March 2025
2 SKUSA Rulebook Updates: 2/13/2025 Thursday, 13 February 2025
3 SKUSA Rulebook Updates: 10/9/2024 Wednesday, 09 October 2024
4 SKUSA Rulebook Updates: 5/1/2024 Tuesday, 30 April 2024
5 Rulebook Update Thursday, 22 February 2024
6 SKUSA Rulebook Updates: 12/6/2023 Wednesday, 06 December 2023
7 Shifter Push Back Bumpers in Vegas Thursday, 05 October 2023
8 SKUSA Rulebook Updates: 10/2/2023 Monday, 02 October 2023
9 Max Bore Size Update Wednesday, 23 August 2023
10 Shifter Push Back Bumpers in New Castle Thursday, 22 June 2023
11 Panel Numbers & Colors - Changes and Enforcement Thursday, 22 June 2023
12 Rule Clarification Regarding Protests Saturday, 17 June 2023
13 National Pro Shifter Class to Become KZ Only (Effective Immediately) Thursday, 18 May 2023
14 Carburetor Mounting Clarification Wednesday, 26 October 2022
15 Swift Airbox Tubes Friday, 09 September 2022
16 PBB PROTEST GUIDELINES Wednesday, 27 July 2022
17 CLARIFICATION - 303.4.1 Bumpers and Bodywork Tuesday, 19 July 2022
18 Rulebook Update : SSE Exhaust Spacer Monday, 16 May 2022
19 Tech Update Effective April 5, 2022 Tuesday, 22 March 2022
20 Rule Update - 106.2 Helmets Friday, 11 March 2022
 
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