"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 per refueling and requiring pit stops, not only do fast karts win, but pit strategies also come into play, adding the unique enjoyment of endurance racing.
Additionally, an original element of “K-TAI” is that vehicles stopped on the course during the race can be retrieved by the pit crew and restarted to continue racing, aiming to reach the checkered flag until the very 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 4-cycle engine karts.
Since 2021, electric kart classes have been introduced, and in 2022, a class using biofuel karts was also established.
This is an easy-to-join karting 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 an MCoM / SMSC member
Pit Crew: ¥1,000 / 1 person
Helper: ¥1,000 / 1 person
■Provisional MS Mutual Aid Fee
Driver: ¥7,000 / 1 person *If not an MCoM Member / SMSC Membership Benefits
Pit Crew: ¥500 / 1 person *If not an MCoM Member / SMSC Membership Benefits
Machine Description
[4-Stroke Sports Kart]The organizer designates engines from various manufacturers such as Honda's GX series, SUBARU's EX series, YAMAHA, and BRIGGS & STRATTON, and participants can choose from among them.
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 (Duration 5 minutes)
・Honda GX200, GX200SP
・SUBARU EX21
・EIKO EX21E
・YAMAHA MZ200
・BRIGGS & STRATTON 206
Class II (Duration 5 minutes 30 seconds)
・Honda GX270
・SUBARU EX27, KX21
・BRIGGS & STRATTON WORLD FORMULA
* A 7100 r.p.m limiter is mandatory.
Class III (Duration 6 minutes)
・YAMAHA MX300RKC
* When using the MX300RKC, specify the number of teeth on 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 kart driven by an electric motor and battery
* 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.
