Dallara SF14

Dallara SF14

Toyota-powered SF14 of Team LeMans, driven by Loïc Duval
Category	Super Formula
Constructor	Dallara
Predecessor	Swift FN09
Successor	Dallara SF19
Technical specifications [1]
Chassis	Sandwich Carbon/aluminium honeycomb structure designed by Dallara [2]
Suspension (front)	Pushrod with torsion bar
Suspension (rear)	Pushrod
Length	5,268 mm (207 in)
Width	1,900 mm (75 in)
Height	960 mm (38 in)
Wheelbase	3,165 mm (125 in)
Engine	Honda HR-414E or Toyota RI4A, 2,000 cubic centimetres (122 cubic inches; 2 litres), I4, Turbocharged (supplied by Garrett), mid-mounted
Transmission	Ricardo 6 forward + 1 reverse semi-automatic paddle-shift
Power	550 brake horsepower (560 PS; 410 kW) 500 newton-metres (370 lbf⋅ft)
Weight	660 kg (1,455.1 lb) (including driver)
Fuel	100 RON [ citation needed ]
Brakes	Calipers: Brembo (carbon) Discs: Brembo (carbon)
Tyres	2014 – 2015 Bridgestone Potenza 2016 – Yokohama Advan (front: 250/620R13, rear: 360/620R13)
Competition history
Debut	2014

The Dallara SF14 is a single-seater open-wheel racing car chassis designed and built by the Italian company Dallara. It was the exclusive chassis for the Japanese Super Formula series from the 2014 season until the 2018 season, when it was replaced by the Dallara SF19.

History

In September 2012, Dallara were announced as the exclusive chassis provider for the next generation Super Formula car. ^[3] Their first, the SF14 was officially unveiled in March 2013 in Tokyo as the replacement for the Swift FN09. Its design was a collaborative effort, with input from drivers and a focus on safety. The chassis was a sandwich carbon fiber/aluminium build, designed to mirror the 2010 Formula One safety regulations to enhance driver protection. The car's aerodynamic features included a Drag Reduction System (DRS), similar to that used in Formula One, to assist with overtaking. A series of LED lights on the rollhoop of the car light up to demonstrate when a driver is utilising OTC. ^{[2] [4]}

The first shakedown was scheduled for July 2013. ^[5] Kazuki Nakajima (Toyota) and Takuya Izawa (Honda) drove the new SF14 at Fuji Speedway over two days in July, lowering the existing series lap record by three seconds. Further tests were scheduled for Motegi, Sugo and Suzuka. ^[6]

Manufacturing and Controversy

The fact that the series' chassis was made by a non-Japanese company was a source of some controversy. ^[7] While the chassis was designed and manufactured by Dallara, an Italian company, approximately 30% of the parts were sourced from Japan. The vehicle supply was handled by Le Mans Co, LTD, based in Tokyo. ^[8]

Specification

Team Mugen SF14 at the 2017 Tokyo Auto Salon

Performance

The SF14 was powered by a 2.0-liter turbocharged four-cylinder engine, with manufacturers Honda and Toyota confirmed as the sole suppliers. The engines produced around 550 horsepower. The car's low weight, combined with its powerful engine, allowed it to exceed speeds of 320 km/h (200 mph). ^[7]

Honda utilised their HR series engines, whilst Toyota used RI power units manufactured by Gazoo Racing.

Tyres

The SF14 debuted with Bridgestone Potenza tyres, but in 2016 was replaced by Yokohama as the exclusive control tyre supplier to the series. ^[9]

Statistics

Records ^[10]

Record	Holder	Achieved
Most race wins	Andre Lotterer	6
Most championships	Hiroaki Ishiura	2
Most starts	Hiroaki Ishiura Yuji Kunimoto Naoki Yamamoto Tomoki Nojiri Narain Karthikeyan	39
Fastest lap	Kazuki Nakajima	00.44.008 Tsukuba Circuit

References

1. "Super Formula Series Outline".
2. "Here's How A Super Formula Car Compares To A Formula 1 Machine". carthrottle.com.
3. "Rising Sun report 4: The Italians move in". racecar-engineering.com.
4. "2014 Super Formula concept revealed". racecar-engineering.com.
5. "Regarding The First Shakedown Test Of The New "SF14" Chassis And Engine Slated For The 2014 Season Onward" (PDF). superformula.net.
6. "R T014 AT FUJI". Dallara Magazine. Italy: Dallara. 2013. Retrieved 12 September 2025.
7. "Dallara SF14". italiaspeed.com.
8. "Dallara". lemans.co.jp.
9. "YOKOHAMA to continue supplying tyres for SUPER FORMULA from 2023 and develop racing tyres using sustainable materials". yokohama.eu.
10. "End of an era: Farewell to Super Formula's SF14". motorsport.com.

External links

• About Super Formula - from Super Formula official website in (in English and Japanese)
• Super Formula - from Dallara official website in (in English and Italian)