All Japan
Road Race Championship

Team
Machine
Specification
Director /
Rider

Schedule &
Results

Team Information 2025

Team

Astemo Pro Honda SI Racing

Team

Astemo Pro Honda SI Racing

Machine

Honda CBR1000RR-R FIREBLADE
CBR600RR
Honda NSF250R

Director

Shinichi Ito

Chief Engineer

Nihei Daisuke

Team Rider

- Astemo Pro Honda SI Racing

JSB1000 Kohta Nozane(No.4)
ST1000 Taiga Hada(No.3)
ST1000 Kohta Arakawa(No.5)
ST1000 Kazuma Watanabe(No.TBA)
ST600 Takuto Suzuki(No.12)

- Astemo SI Racing with Thai Honda

ST1000クラス Nakarin Atiratphuvapat(No.34)
J-GP3 Thanachat Pratumtong(No.15)
J-GP3 Noprutpong Bunprawas(No.30)
J-GP3 Techin Inaphai(No.31)

- Astemo SI Racing with RSC

J-GP3 Todaka Rintaro(No.34)

Machine Specification

Name

JSB1000、ST1000

Based Vehicle

Honda CBR1000RR-R

Car Model

SC82

Dimensions

overall length：2100mm　｜　overall length：745mm　｜　overall length：1140mm

Weight

165kg or more（JSB1000）, 170kg or more（ST1000）

Wheelbase

1455mm

Suspension

Front：SHOWA
Rear：SHOWA

Brakes

Front：NISSIN
Rear：NISSIN

Tires

BRIDGESTONE（JSB1000）, DUNLOP（ST1000）

Tires size

Front：120/600R17（JSB1000）, 120/70R17（ST1000）
Rear：200/655R17（JSB1000）, 200/60R17（ST1000）

Engine Type

Liquid-cooled 4-stroke, DOHC 4-valve

Displacement

999cc

Max Power

218PS/14,500rpm

Maximum Torque

11.5kgf・m/12,500rpm

Transmission

Constant mesh, 6-speed return

Lubricant

Pro Honda

Machine Maintenance

SI Racing

Name

ST600

Based Vehicle

Honda CBR600RR

Car Model

PC40

Dimensions

overall length：2030mm　｜　overall length：685mm　｜overall length：1140mm

Weight

170kg or more

Wheelbase

1370mm

Suspension

Front：SHOWA
Rear：SHOWA

Brakes

Front： TOKICO
Rear：NISSIN

Tires

BRIDGESTONE

Tires size

Front： 120/600R17
Rear： 180/640R17

Engine Type

Liquid-cooled 4-stroke, DOHC 4-valve

Displacement

599cc

Max Power

121PS/14,000rpm

Maximum Torque

6.5kgf・m/11,500rpm

Transmission

Constant mesh, 6-speed return

Lubricant

Pro Honda

Machine Maintenance

SI Racing

Name

J-GP3

Based Vehicle

Honda NSF250R

Car Model

MR03

Dimensions

overall length：1809mm　｜　overall width：560mm　｜　overall height：1037mm

Weight

84kg

Wheelbase

1219mm

Suspension

Front：SHOWA
Rear：SHOWA

Brakes

Front：NISSIN
Rear：NISSIN

Tires

BRIDGESTONE/DUNLOP

Tires size

Front：90/80R17
Rear：115/75R17

Engine Type

Liquid-cooled 4-stroke, DOHC 4-valve

Displacement

249.3cm³

Max Power

35.5kw/13,000rpm

Maximum Torque

28.0N・m/10,500rpm

Transmission

Constant mesh

Lubricant

MOTUL

Machine Maintenance

SI Racing/RSC

Director / Rider

Director

Shinichi Ito

X
Instagram

Rider

Kohta Nozane

Date of birth: 29th Oct, 1995
Height: 171cm
Hometown: Chiba Prefecture

Instagram

Rider

Taiga Hada

Date of birth: 12th Sep, 1998
Height: 168cm
Hometown: Yamanashi Prefecture

X
Instagram

Rider

Kohta Arakawa

Date of birth: 15th Nov, 2002
Height: 173cm
Hometown: Tokyo

X
Instagram

Rider

Kazuma Watanabe

Date of birth: 6th May, 1990
Height: 168cm
Hometown: Tochigi Prefecture

Rider

Takuto Suzuki

Date of birth: 14th Sep, 2002
Height: 173cm
Hometown: Tottori Prefecture

X
Instagram

ページの先頭へ

Astemo SI Racing with Thai Honda

Rider

Nakarin Atiratphuvapat

Date of birth: 17th Jan, 1996
Hometown: Khon Kaen, Thailand

Rider

Thanachat Pratumtong

Date of birth: 19th Jun, 2010
Hometown: Bangkok, Thailand

Rider

Noprutpong Bunprawa

Date of birth: 1st Jun, 2008
Hometown: Chonburi、Thailand

Rider

Techin Inaphai

Date of birth: 13th Jul,2012
Hometown: Bangkok, Thailand

ページの先頭へ

Astemo SI Racing with RSC

Rider

Rintaro　Todaka

Date of birth: 19th Aug,2010
Hometown: Fukuoka Prefecture

Race Information 2025

Schedule & Results

Rider Ranking

JSB1000

Kohta Nozane

-Points

ST1000

Taiga Hada

-Points

Kohta Arakawa

-Points

Nakarin

-Points

ST600

Takuto Suzuki

-Points

J-GP3

Thanachat

-Points

Noprutpong

-Points

Techin

-Points

Todaka Rintaro

-Points

Round1

Apr. 19(Sat),20(Sun)MOBILITY RESORT MOTEGITochigi Prefecture

JSB1000

Kohta Nozane

4/19Qualifying

4/20Final

DNF

Round2

May. 24(Sat),25(Sun)Sportsland SUGOMiyagi Prefecture

JSB1000

Kohta Nozane

5/24Qualifying

5/24R1

5/25R2

ST1000

Taiga Hada

5/24Qualifying

5/25Final

Kohta Arakawa

5/24Qualifying

5/25Final

Nakarin

5/24Qualifying

5/25Final

ST600

Takuto Suzuki

5/24Qualifying

5/24R1

5/25R2

J-GP3

Thanachat

5/24Qualifying

5/25Final

Noprutpong

5/24Qualifying

5/25Final

Techin

5/24Qualifying

5/25Final

Todaka Rintaro

5/24Qualifying

5/25Final

Round3

Jun. 21(Sat),22(Sun)Tsukuba circuitIbaraki Prefecture

J-GP3

Thanachat

6/21Qualifying

6/21R1

6/22R2

Noprutpong

6/21Qualifying

6/21R1

6/22R2

Techin

6/21Qualifying

6/21R1

6/22R2

Todaka Rintaro

6/21Qualifying

6/21R1

6/22R2

Round4

Aug. 23(Sat),24(Sun)MOBILITY RESORT MOTEGITochigi Prefecture

JSB1000

Kohta Nozane

8/23Qualifying

8/23R1

8/24R2

ST1000

Taiga Hada

8/23Qualifying

8/23R1

8/24R2

Kohta Arakawa

8/23Qualifying

8/23R1

8/24R2

Nakarin

8/23Qualifying

8/23R1

8/24R2

ST600

Takuto Suzuki

8/23Qualifying

8/24Final

J-GP3

Thanachat

8/23Qualifying

8/24Final

Noprutpong

8/23Qualifying

8/24Final

Techin

8/23Qualifying

8/24Final

Todaka Rintaro

8/23Qualifying

8/24Final

Round5

Sep. 13(Sat),14(Sun)AUTO POLISOita Prefecture

JSB1000

Kohta Nozane

9/13Qualifying

9/13R1

9/14R2

ST1000

Taiga Hada

9/13Qualifying

9/14Final

Kohta Arakawa

9/13Qualifying

9/14Final

Nakarin

9/13Qualifying

9/14Final

ST600

Takuto Suzuki

9/13Qualifying

9/14Final

J-GP3

Thanachat

9/13Qualifying

9/14Final

Noprutpong

9/13Qualifying

9/14Final

Techin

9/13Qualifying

9/14Final

Todaka Rintaro

9/13Qualifying

9/14Final

Round6

Oct. 4(Sat),5(Sun)Okayama International CircuitOkayama Prefecture

JSB1000

Kohta Nozane

10/4Qualifying

10/5Final

ST1000

Taiga Hada

10/4Qualifying

10/5Final

Kohta Arakawa

10/4Qualifying

10/5Final

Nakarin

10/4Qualifying

10/5Final

ST600

Takuto Suzuki

10/4Qualifying

10/5Final

J-GP3

Thanachat

10/4Qualifying

10/5Final

Noprutpong

10/4Qualifying

10/5Final

Techin

10/4Qualifying

10/5Final

Todaka Rintaro

10/4Qualifying

10/5Final

Round7

Oct. 25(Sat),26(Sun)Suzuka CircuitMie Prefecture

JSB1000

Kohta Nozane

10/25Qualifying

10/25R1

10/26R2

ST1000

Taiga Hada

10/25Qualifying

10/26Final

Kohta Arakawa

10/25Qualifying

10/26Final

Nakarin

10/25Qualifying

10/26Final

ST600

Takuto Suzuki

10/25Qualifying

10/26Final

J-GP3

Thanachat

10/25Qualifying

10/26Final

Noprutpong

10/25Qualifying

10/26Final

Techin

10/25Qualifying

10/26Final

Todaka Rintaro

10/25Qualifying

10/26Final

Suzuka 8 Hour Endurance - Cancellation

Aug. 1(Fri),2(Sat),3(Sun)Suzuka CircuitMie Prefecture

Qualifying

8/2-

Final

8/3-

Past results

Back to home

All Japan Road Race Championship

Team Information 2025

Team

Machine Specification

Director / Rider

Shinichi Ito

Kohta Nozane

Taiga Hada

Kohta Arakawa

Kazuma Watanabe

Takuto Suzuki

Astemo SI Racing with Thai Honda

Nakarin Atiratphuvapat

Thanachat Pratumtong

Noprutpong Bunprawa

Techin Inaphai

Astemo SI Racing with RSC

Rintaro Todaka

Race Information 2025

Schedule & Results

Past results

All Japan
Road Race Championship

Rintaro　Todaka