Triumph Street Triple

The Triumph Street Triple is a naked or streetfighter motorcycle made by Triumph Motorcycles, first released towards the end of 2007.[2] The bike is closely modelled on the Speed Triple 1050 but uses a re-tuned inline three cylinder 675 cc engine from the Daytona 675 sport bike, which was released in 2006.[2][3]

Triumph Street Triple

Manufacturer	Triumph
Class	Streetfighter
Engine	674.8 cc (41.18 cu in) liquid-cooled DOHC inline-3
Bore / stroke	74.0 mm × 52.3 mm (2.91 in × 2.06 in)
Compression ratio	12.65:1
Power	79 kW (106 hp) @ 11,850 rpm(claimed)[1]
Torque	68.1 N⋅m (50.2 ft⋅lb) @ 9,750 rpm(claimed)[1]
Rake, trail	24.3°, 95.3 mm (3.75 in)
Wheelbase	1,395 mm (54.9 in)
Dimensions	L: 2,030 mm (80 in) W: 736 mm (29.0 in) H: 1,250 mm (49 in)
Seat height	800 mm (31 in)
Fuel capacity	17.4 l (3.8 imp gal; 4.6 US gal)
Related	Triumph Daytona 675

History

First generation Street Triple

2014 Street Triple R with slanted headlights and low-mounted exhaust

In 2007, a number of spy photos and speculative design drawings were reported in the motorcycle press,[4] with one magazine capturing a road test of the completed Street Triple.[5] Later articles reported on leaked design shots of the new bike.[6] A report on the showcasing of the finished bike to dealers was published on 6 March 2007, along with a spy video of a test ride.[7]

The Street Triple R shares the same engine and chassis as the standard model but has fully adjustable suspension both front and rear which is shared with the Daytona. The revised rear suspension results in a slightly higher seat height over the standard model and sharper rake. It has other minor equipment differences over the standard bike in the way of handlebars, brakes, and different colour schemes which were matte orange and matte grey[8].

In 2010, Triumph launched the Tiger 800 and Tiger 800 XC, which use a longer stroke version of the Street Triple engine.[9]

The Street Triple's circular headlights were changed to an angular shape for the 2012 model year. This was nicknamed the bugeye model quickly from the bug like appearance the lights give the bike. In 2013, Triumph remodeled the frame, making the bike both lighter and more agile. The engine remained unchanged while the 1st gear was made considerably taller by taking the gear ratios from the Daytona 675. Total mass was reduced by 6 kg. A new exhaust mounted underneath the engine replaced the underseat exhaust from the previous version, moving the centre of mass forwards and down. .[10] In February 2015 Triumph released a new Street Triple Rx, with the angular seat unit from the Daytona 675, a quick-shifter and different colors (where the rims are red in any color scheme).[11]

In January 2017, Triumph announced they would replace the 675 cc Street Triple with a new range of 765 cc (46.7 cu in) Street Triples. Despite having a capacity increase of 90 cc (5.5 cu in), the new models weigh slightly less than the outgoing 675 cc bike, and the engine casings are just as compact. The three models in the range are the base model S, intermediate R, and highest specification RS. As well as having different levels of equipment, such as brakes, suspension, and a quick shifter, the three models have different power outputs: 113 hp (84 kW) for the S, 118 hp (88 kW) for the R, and 123 hp (92 kW) for the RS. For the UK's A2 license, a 660 cc (40 cu in) version of the R will also be sold.[12][13]

Triumph revised the Street Triple in 2017. For 2020, the more track-oriented RS version was given minor changes to the intake and exhaust with no change in power output, and cosmetic changes to the mirrors and headlight. A 1.8 in (46 mm) lower seat height version, with a different seat and modified suspension, was added.[14][15]

Use in racing

Since 2019 the Moto2 class in the MotoGP world championship has been powered by the 765 cc engines from the Street Triple, replacing the engines that were previously based on the Honda CBR600RR from 2010 to 2018.

Specification

Year	2007–2012 Street Triple	2009–2012 Street Triple R	2013–2016 Street Triple	2013–2016 Street Triple R	2017– Street Triple S	2017– Street Triple R	2017– Street Triple RS
Engine	674.8 cc (41.18 cu in) transverse inline-3, DOHC, 4V/cyl, liquid cooled				765 cc (46.68 cu in) transverse inline-3, DOHC, 4V/cyl, liquid cooled
Bore × stroke	74 mm × 52.3 mm (2.91 in × 2.06 in)				77.994 x 53.38 mm ( 3.14 in x 2.10 in)
Fuel system	Keihin EFI		Multipoint sequential EFI SAI		Electronic Fuel Injection
Compression ratio	12.65:1				12.66:1
Crankshaft horsepower (claimed)	79 kW (106 bhp) @ 11,750 rpm[1]				83.1 kW (111.4 bhp) @ 11,250 rpm [16]	86.8 kW (116.4 bhp) @ 12,000 rpm [16]	90.4 kW (121.2 bhp) @ 11,700 rpm [16]
Crankshaft torque (claimed)	68 N⋅m (50 lbf⋅ft) @ 9,100 rpm[1]				73 N⋅m (54 lbf⋅ft) @ 9,100 rpm [16]	77 N⋅m (57 lbf⋅ft) @ 9,400 rpm [16]	77 N⋅m (57 lbf⋅ft) @ 10,800 rpm [16]
Rear wheel horsepower	68.1 kW (91.3 hp) @ 11,750 rpm[17]						94.16 kW (126.27 bhp) @ 11,750 rpm [18]
Rear wheel torque	60.2 N⋅m (44.4 ft⋅lb) @ 8250 rpm[17]						80 N⋅m (59 lbf⋅ft) @ 9,500 rpm [18]
Transmission	Multi-plate wet clutch, 6-speed				Multi-plate wet clutch, 6-speed
Final drive	O-ring chain				XW-ring, 118 link
Frame	Aluminium beam twin-spar				Front - Aluminium beam twin spar Rear - 2 piece high pressure die cast [19]
Front suspension	Kayaba (KYB) 41 mm telescopic fork				Showa 41mm upside down separate function forks (SFF)	Showa 41mm upside down separate function big piston forks (SF-BPF)	Showa 41mm upside down big piston forks (BPF)
Front suspension adjustment	None	Preload, compression and rebound	None	Preload, compression and rebound	Preload	Preload, compression and rebound	Preload, compression and rebound
Front fork travel	120 mm (4.7 in)			115 mm (4.5 in)	110 mm (4.33 in)	115mm (4.5 in)	115mm (4.5 in)
Rear suspension	Kayaba monoshock				Showa piggyback reservoir monoshock		Öhlins STX40 piggyback reservoir monoshock
Rear adjustment	Preload			Preload, compression, and rebound	Preload	Preload, compression, and rebound	Preload, compression, and rebound
Rear travel	126 mm (5.0 in)	130 mm (5.1 in)	126 mm (5.0 in)	135 mm (5.3 in)	124 mm (4.88 in)	134 mm (5.27 in)	131 mm (5.15 in)
Brakes, front	Dual 308 mm discs	Dual Nissin 308 mm discs	Dual Nissin 310 mm discs, ABS		Dual 310 mm Nissin 2-piston, ABS	Dual 310 mm Brembo M4.32 4-piston radial monobloc, ABS (switchable)	Dual 310 mm Brembo M50 4-piston radial monobloc, ABS (switchable)
Brakes, rear	220 mm disc	Nissin 220 disc	Brembo 220 mm disc, ABS		Single 220 mm Brembo fixed disc, ABS	Single 220 mm Brembo fixed disc, ABS (switchable)	Single 220 mm Brembo fixed disc, ABS (switchable)
Wheels	Front: 3.5x17in Rear: 5.5x17in
Tires	Front: 120/70 ZR 17 Rear: 180/55 ZR 17
Fuel capacity	17.4 l (3.8 imp gal; 4.6 US gal)
Height (w/o mirrors)	1,060 mm (42 in)	1,110 mm (44 in)	1,060 mm (42 in)	1,110 mm (44 in)			1,085 mm (42.7 in) [19]
Dry weight							166 kg (366 lb) [19]
Wet weight	182 kg (401 lb)
Width	735 mm (28.9 in)	2009–2010: 735 mm (28.9 in) 2011–2012: 755 mm (29.7 in)	735 mm (28.9 in)	740 mm (29 in)
Length	2,000 mm (79 in)	2,030 mm (80 in)	2,000 mm (79 in)	2,055 mm (80.9 in)
Wheelbase	2007–2009: 1,394.5 mm (54.90 in) 2010: 1,390 mm (55 in) 2011–2012: 1,410 mm (56 in)	2009–2010: 1,394.5 mm (54.90 in) 2011–2012: 1,410 mm (56 in)	1,410 mm (56 in)	1,410 mm (56 in)			1,410 mm (56 in) [19]
Rake, trail	24.3, 95.3 mm (3.75 in)	23.9, 92.4 mm (3.64 in)	24.1, 99.6 mm (3.92 in)	23.4, 95 mm (3.7 in)	24.7, 104.2 mm (4.10 in)	23.8, 99 mm (3.89 in)	23.9, 100.8 mm (3.96 in)

References

1. "Street Triple R". Triumph. 2017. Retrieved 21 July 2016.
2. https://www.cycleworld.com/2007/05/23/2008-triumph-street-triple-675-sneak-peek-first-look Cycleworld 2008 Triumph Street Triple 675 Sneak Peek]
3. motorcycledaily.com on Triumph Press Release Street Triple 675 Archived 28 May 2007 at the Wayback Machine
4. superbike.co.uk Triumph speed triple Archived 13 May 2007 at the Wayback Machine
5. MCN Spy Picture of speed triple
6. visordown.com leaked picture of Triumph Street Triple 675 pic
7. MCN Triumph Naked 675 Confirmed
8. http://www.motorcyclenews.com/news/new-bikes/2009/september/sep2809-new-colours-for-triumph-street-triple-street-triple-r-and-daytona/
9. "Triumph Tiger 800 launch: Simon Warburton". Visor Down. 7 November 2010. Retrieved 23 November 2010.
10. Cope, Ben (11 May 2012), "2013 Triumph Street Triple R review", Visor Down
11. Street Triple Rx, Triumph, 30 September 2014
12. "Triumph Street Triple 765 range revealed; Triumph's new Street Triple range is here", Visor Down, 1 January 2017
13. Newland, Richard (11 January 2017), "Triumph unveil new Street Triple 765 RS", Motorcycle News
14. "2020 Triumph Street Triple R First Look (6 Fast Facts)", Ultimate Motorcycling, 11 February 2020
15. Motorcycles, Triumph. "Specification". Triumph Motorcycles. Retrieved 26 May 2020.
16. Motorcycles, Triumph. "The Street Triple Range | Triumph Motorcycles". www.triumphmotorcycles.co.uk. Retrieved 22 November 2017.
17. Hearn, Alex. "1-2-3-4: single, twin, triple or four? Adding up the ultimate 650cc solution; Which middleweight is master? The BMW Xmoto, Kawasaki Versys, Triumph Street Triple and Suzuki GSX650F meet on the street to find out." Motorcyclist Apr. 2008: 76+. General OneFile. Web. 13 Jan. 2015.
18. "MCN Fleet: Speed vs Street Power". Motorcycle News. Retrieved 11 November 2017.
19. Motorcycles, Triumph. "STREET TRIPLE RS | Triumph Motorcycles". www.triumphmotorcycles.co.nz. Retrieved 11 November 2017.

External links

• Official website