"K-TAI" refers to
What is “K-TAI”?
Let's enjoy KART together
Concept of "K-TAI"
"K-TAI" held since 2001
Initially, various types of karts, including those with transmissions and centrifugal clutches, were used. However, to make karting more accessible, four-stroke sports karts were introduced in 2007, and from 2010, events were held exclusively with four-stroke sports karts. In 2021, a new class using electric motors was established. The class structure allows for enjoyment from beginners to advanced users.
Regarding the regulations, by setting limits on the amount of fuel for each refueling and requiring a stay in the pit, not only do fast karts win, but pit strategies also come into play, adding to the unique enjoyment of endurance racing.
Additionally, vehicles that stop on the course during the race can be retrieved by the pit crew, allowing for a restart and continuation of the race, which is an original element of "K-TAI" aimed at reaching the checkered flag until the end.
Participants can join from the age of 10, and there are teams that include three generations, from grandparents to grandchildren...
The Enjoy 7-Hour Endurance Race is scheduled for September 7, 2025 (Sun)!
Let’s all enjoy KART together again in 2025!
Overview
This is a 7-hour endurance event held on the 4.8013 km Mobility Resort Motegi Racing Course using four-cycle engine karts.
Since 2021, a class for electric karts has been added, and in 2022, a class for karts using biofuel was also established.
It is an easy-to-join kart event that does not require a competition license.
Participation Requirements and Necessary Items
Price
September 7 (Sun): Enjoy 7-Hour Endurance ¥88,000 / 1 Team
■Driver / Pit Crew Registration Fee
Driver: ¥5,000 / 1 person ※If not a member of MCoM / SMSC Membership Benefits
Pit Crew: ¥1,000 / 1 person
Helper: ¥1,000 / 1 person
■MS Temporary Mutual Aid Fee
Driver: ¥7,000 / 1 person *If not a MCoM Member / SMSC Membership Benefits
Pit Crew: ¥500 / 1 person *If not a MCoM Member / SMSC Membership Benefits
Machine Description
[4-Stroke Sports Kart]A system where the organizer specifies engines from various manufacturers such as Honda's GX series, SUBARU's EX series, YAMAHA, and BRIGGS & STRATTON, from which participants can choose.
Engines for sports karts are available at many rental kart tracks across the country, characterized by power characteristics and output that are easy for beginners to handle.
Class I (Stay time 5 minutes)
・Honda GX200, GX200SP
・SUBARU EX21
・EIKO EX21E
・YAMAHA MZ200
・BRIGGS & STRATTON 206
Class II (Stay time 5 minutes 30 seconds)
・Honda GX270
・SUBARU EX27, KX21
・BRIGGS & STRATTON WORLD FORMULA
*Must be equipped with a 7100 r.p.m limiter.
Class III (Duration: 6 minutes)
・YAMAHA MX300RKC
*When using the MX300RKC, specify the number of teeth for each sprocket as follows.
Drive Sprocket: 32 (fixed)
Driven Sprocket: 69 or more
・BRIGGS & STRATTON XR1450
Modification or alteration of the engine itself is prohibited, and the parts that can be added or changed are limited to the muffler, carburetor, and governor device.
Class E
・Electric karts powered by electric motors and batteries
*Please check the special regulations for details.
Class F
・Kart using an engine powered by next generation biomass fuel
*Please check the special regulations for details.
