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{{Short description|Street motorcycle sold by Derbi}}
{{Infobox Motorcycle
{{Infobox Motorcycle
| name = GPR 125 Racing
| name = GPR 125 Racing
Line 7: Line 8:
| production = 2005–
| production = 2005–
| class = [[Sport bike]]
| class = [[Sport bike]]
| engine = {{convert|125|cc|abbr=on}}<br>2005-2009: [[Radiator (engine cooling)|liquid cooled]], [[two stroke engine|two stroke]]<ref name="Visor">{{cite web |title=GPR 125 (2005 - present) review |url=https://www.visordown.com/reviews/motorbike/gpr-125-2005-present-review |website=Visordown |accessdate=14 May 2019 |language=en |date=1 January 2005}}</ref><br>2010-: liquid cooled [[Four stroke engine|four stroke]]<ref name="Mcn 2stroke" />
| engine = {{convert|125|cc|abbr=on}}<br>2005-2009: [[Radiator (engine cooling)|liquid cooled]], [[two stroke engine|two stroke]]<ref name="Visor">{{cite web |title=GPR 125 (2005 - present) review |url=https://www.visordown.com/reviews/motorbike/gpr-125-2005-present-review |website=Visordown |access-date=14 May 2019 |language=en |date=1 January 2005}}</ref><br>2010-: liquid cooled [[Four stroke engine|four stroke]]<ref name="Mcn 2stroke" />
| bore_stroke = 2005-2009: {{convert|56.0|x|50.7|mm|abbr=on}}<br>2010-: {{convert|58.0|x|47.0|mm|abbr=on}}
| bore_stroke = 2005-2009: {{convert|56.0|x|50.7|mm|abbr=on}}<br>2010-: {{convert|58.0|x|47.0|mm|abbr=on}}
| compression_ratio= 12.5:1
| compression_ratio= 12.5:1
| transmission = 6-speed
| transmission = 6-speed
| suspension = Ø40 mm upside-down fork. 110 mm. travel<br />Rear: Monoshock. 110 mm travel, Adjustable Preload<ref name="bikez">{{cite web |title=2012 Derbi GPR 125 4T 4S |url=https://bikez.com/motorcycles/derbi_gpr_125_4t_4s_2012.php |website=bikez.com |accessdate=13 May 2019 |language=en}}</ref>
| suspension = Ø40 mm upside-down fork. 110 mm. travel<br />Rear: Monoshock. 110 mm travel, Adjustable Preload
| brakes = Front: Single 300 mm Hydraulic Disc with Four Piston Radial Caliper<br />Rear: Single 180 mm Disc with Two-Piston Caliper
| brakes = Front: Single 300 mm Hydraulic Disc with Four Piston Radial Caliper<br />Rear: Single 180 mm Disc with Two-Piston Caliper
| tires = Front: 110/70-17<br />Rear: 140/70-17
| tires = Front: 110/70-17<br />Rear: 140/70-17
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| wet_weight = {{convert|285|lb|kg||abbr=on}}
| wet_weight = {{convert|285|lb|kg||abbr=on}}
| fuel_capacity = {{convert|3.4|usgal}}
| fuel_capacity = {{convert|3.4|usgal}}
| oil _tank_capacity = {{convert|1.5|l|usqt}}
| oil _tank_capacity = {{convert|1.5|L|usqt}}
| related = Derbi GPR 125 Nude, Derbi GPR 50 Racing & Nude, Gilera SC 125 & Moto 125sc
| related = Derbi GPR 125 Nude, Derbi GPR 50 Racing & Nude, Gilera SC 125 & Moto 125sc
}}
}}


The '''Derbi GPR 125''' is a street [[motorcycle]] sold by [[Derbi]] - Nacional Motor since 2005.<ref name="Mcn 2stroke">{{cite web |title=DERBI GPR125 (2005-2009) Review |url=https://www.motorcyclenews.com/bike-reviews/derbi/gpr125/2005/ |website=Motorcycle News |accessdate=13 May 2019 |language=en |date=23 November 2006}}</ref> The original GPR125 was powered by a single-cylinder [[two-stroke engine]] with a steel lined cast iron cylinder manufactured by Yamaha, but was superseded in 2010 by an all-new [[DOHC]] four-stroke four-valve model.<ref name="Mcn 4stroke">{{cite web |title=DERBI GPR125 (2010-on) Review |url=https://www.motorcyclenews.com/bike-reviews/derbi/gpr125/2010/ |website=Motorcycle News |accessdate=13 May 2019 |language=en |date=23 July 2010}}</ref>
The '''Derbi GPR 125''' is a street [[motorcycle]] sold by [[Derbi]] - Nacional Motor since 2005.<ref name="Mcn 2stroke">{{cite web |title=DERBI GPR125 (2005-2009) Review |url=https://www.motorcyclenews.com/bike-reviews/derbi/gpr125/2005/ |website=Motorcycle News |access-date=13 May 2019 |language=en |date=23 November 2006}}</ref> The original GPR125 was powered by a single-cylinder [[two-stroke engine]] with a steel lined cast iron cylinder manufactured by Yamaha, but was superseded in 2010 by an all-new [[DOHC]] four-stroke four-valve model.<ref name="Mcn 4stroke">{{cite web |title=DERBI GPR125 (2010-on) Review |url=https://www.motorcyclenews.com/bike-reviews/derbi/gpr125/2010/ |website=Motorcycle News |access-date=13 May 2019 |language=en |date=23 July 2010}}</ref>


==Two-stroke GPR125==
==Two-stroke GPR125==
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==Four-stroke GPR125==
==Four-stroke GPR125==
In 2010 the engine was changed to a new four-stroke engine.<ref name="Mcn 4stroke" /> The single cylinder engine features double overhead camshafts and four valves.<ref name="Topspeed">{{cite web |title=2013 Derbi GPR 125 |url=https://www.topspeed.com/motorcycles/motorcycle-reviews/derbi/2013-derbi-gpr-125-ar157041.html |website=www.topspeed.com |accessdate=14 May 2019 |date=30 June 2013}}</ref>
In 2010 the engine was changed to a new four-stroke engine.<ref name="Mcn 4stroke" /> The single cylinder engine features double overhead camshafts and four valves.<ref name="Topspeed">{{cite web |title=2013 Derbi GPR 125 |url=https://www.topspeed.com/motorcycles/motorcycle-reviews/derbi/2013-derbi-gpr-125-ar157041.html |website=www.topspeed.com |access-date=14 May 2019 |date=30 June 2013}}</ref>


==References==
==References==

Latest revision as of 03:41, 7 December 2022

GPR 125 Racing
ManufacturerDerbi
Also calledGilera SC125
Parent companyPiaggio
Production2005–
ClassSport bike
Engine125 cc (7.6 cu in)
2005-2009: liquid cooled, two stroke[1]
2010-: liquid cooled four stroke[2]
Bore / stroke2005-2009: 56.0 mm × 50.7 mm (2.20 in × 2.00 in)
2010-: 58.0 mm × 47.0 mm (2.28 in × 1.85 in)
Transmission6-speed
SuspensionØ40 mm upside-down fork. 110 mm. travel
Rear: Monoshock. 110 mm travel, Adjustable Preload
BrakesFront: Single 300 mm Hydraulic Disc with Four Piston Radial Caliper
Rear: Single 180 mm Disc with Two-Piston Caliper
TiresFront: 110/70-17
Rear: 140/70-17
Wheelbase53.34 in (1,355 mm)
DimensionsL: 79.68 in (2,024 mm)
W: 28.34 in (720 mm)
H: 45.66 in (1,160 mm)
Weight225 lb (102 kg) (dry)
285 lb (129 kg) (wet)
Fuel capacity3.4 US gallons (13 L; 2.8 imp gal)
RelatedDerbi GPR 125 Nude, Derbi GPR 50 Racing & Nude, Gilera SC 125 & Moto 125sc

The Derbi GPR 125 is a street motorcycle sold by Derbi - Nacional Motor since 2005.[2] The original GPR125 was powered by a single-cylinder two-stroke engine with a steel lined cast iron cylinder manufactured by Yamaha, but was superseded in 2010 by an all-new DOHC four-stroke four-valve model.[3]

Two-stroke GPR125

[edit]

The engine in the original two-stroke model is sourced from Yamaha. This engine was used in the Yamaha DTR125 Dual Sport and TZR125 sport bike. Engine parts from these two bikes will directly swap with the Derbi. It uses the Yamaha Yamaha Power Valve System, a two-stroke power valve system, which consists of a rotary valve located in the exhaust port which changes the exhaust port timing and area. The power valve is controlled by an ECU and servo motor.

Four-stroke GPR125

[edit]

In 2010 the engine was changed to a new four-stroke engine.[3] The single cylinder engine features double overhead camshafts and four valves.[4]

References

[edit]
  1. ^ "GPR 125 (2005 - present) review". Visordown. 1 January 2005. Retrieved 14 May 2019.
  2. ^ a b "DERBI GPR125 (2005-2009) Review". Motorcycle News. 23 November 2006. Retrieved 13 May 2019.
  3. ^ a b "DERBI GPR125 (2010-on) Review". Motorcycle News. 23 July 2010. Retrieved 13 May 2019.
  4. ^ "2013 Derbi GPR 125". www.topspeed.com. 30 June 2013. Retrieved 14 May 2019.
[edit]
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