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KTM RC250GP

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KTM RC250GP
Sandro Cortese riding the RC250GP at the 2012 Australian Grand Prix
ManufacturerKTM
Production2012 -
PredecessorKTM 125 FRR
Successor-
ClassMoto3
Engine249.5 cc (15.23 cu in) four-stroke single-cylinder
Bore / stroke81 mm × 48.5 mm (3.19 in × 1.91 in)
Transmission6-speed constant-mesh sequential manual, chain final-drive
Wheelbase1,340 mm
Weightestimated 82kg (dry)
Fuel capacityapprox. 10 liters
RelatedHusqvarna FR250GP
Gas Gas RC250GP

The RC250GP is a Grand Prix racing motorcycle designed and built by KTM for the Moto3 class, introduced in 2012. It is also used in the Moto3 Junior World Championship. The RC250GP is raced by KTM's factory racing program (Red Bull KTM Ajo) as well as supplied to numerous customer teams. The motorcycle is one of the most successful machines of the Moto3 era to date, having taken five constructors' championships, including a clean sweep in 2013 winning every one of the 17 races.

Designation

The motorcycle's name derives from KTM's long-standing usage of the "RC" designation (short for "Road/Competition") for its sportbikes, beginning with the RC8, RC 390, and RC 125 production models and later also applied to its RC16 MotoGP prototype. The "250" relates to the engine displacement as mandated by Moto3 technical regulations. "GP" is short for Grand Prix, specifying the model to usage in Grand Prix racing, as opposed to its derivative models.

Technical Description

All components of the motorcycle frame and engine are developed in-house by KTM. The frame is a steel tube trellis design, while the swingarm is of aluminium construction. The 250cc four-stroke single-cylinder engine is equipped by regulation with a limiter at 13,500 rpm (earlier 14,000 rpm, before Moto3 regulation changes), with maximum torque output beginning at around 10,500 rpm.[1] The engine feeds a 6-gear transmission according to regulations. Suspension components are developed and produced by KTM subsidiary WP Suspension. The Slovenian manufacturer Akrapovič supplies the exhaust system. The braking system is supplied by Brembo and consists of two steel discs controlled by twin-piston calipers on the front wheel and a single disc on the rear wheel. The elliptical shaped air intake is placed on the front fairing, while the duct that connects it to the airbox passes under the steering head. KTM claims a dry weight of the machine of approx. 82 kg[2] though Moto3 regulations set a minimum combined weight of 152 kg for the bike and fully-equipped rider.

Dimensions and weights
Wheelbase 1,340 mm
Dry weight 82 kg
Tank capacity 10 L
Combined weight (bike + fuel + rider) 152 kg
Mechanics
Engine type four-stroke single-cylinder
Displacement (bore, stroke) 249.5 cm3 (Ø81mm, 48.5mm)
Compression ratio 14.5:1
Cooling system liquid
Valvetrain DOHC, 4 valves per cylinder, chain drive
Fuel induction digital electronic indirect multi-point port injection
Ignition variable advance CDI
ECU Dellorto DoPe 3.0 (series spec ECU)
Power <55 bhp (41 kW) @ 13,500 rpm
Maximum engine speed 14,000 rpm
Transmission 6-speed sequential manual, final chain-drive
Starter push start
Exhaust system Akrapovič titanium twin-pipe system
Chassis
Frame Tubular steel trellis, adjustable rake angle and swingarm pivot
Swingarm Pivoted, aluminium-construction
Fork WP Suspension 45mm USD
Rear suspension WP Suspension monoshock with hydraulic height and preload adjustment
Brakes, front 2x Ø190 mm steel discs, Brembo twin-piston radial calipers
Brakes, rear Ø190 mm steel disc, Brembo twin-piston radial caliper
Wheel, front OZ Racing 17"/2.5" forged magnesium rim, Dunlop 95/70-17 tire
Wheel, rear OZ Racing 17"/3.5" forged magnesium rim, Dunlop 115/70-17 tire
Sources:[2][3][4][5]

Grand Prix Racing Results

Constructors' Championship results

Season Points Position
2012 346 1st
2013 425 1st
2014 384 1st
2015 341 2nd
2016 382 1st
2017 248 2nd
2018 353 2nd
2019 347 2nd
2020 318 2nd
2021 369 1st
2022 323 3rd
2023 394 1st

In 2013, KTM RC250GP machines won all races in the season, achieving the maximum possible points total.

Rider's Champions

Derivative Models

RC250R

Also known as the "Production Racer", KTM build a limited production of track-only bikes between 2013 and 2016 based on the RC250GP known as the RC250R. It was intended to be a cheaper "entry level" model for private racers. The bike was subsequently entered as a number of one-off wildcard entries by various teams in the 2014 season. The RC250R features a number of differences compared to the RC250GP,[2][4] including

  • slightly down-tuned engine producing 37 kW (50 bhp) @ 13,000 rpm and maximum torque of 28 Nm @ 11,000 rpm
  • maximum engine speed is limited to 13,500 rpm
  • simplified 2-into-1 titanium exhaust from Akrapovič (as opposed to the RC250GP's twin-pipe system with one exhaust pipe per exhaust valve/port) with additional dB-killer
  • triple clamps from milled aluminium (as opposed to magnesium on the RC250GP)
  • wheels changed to forged aluminium
  • front brakes changed to a single Ø290 mm disc with Brembo 4-piston radial caliper
  • rear brake changed to a caliper and master cylinder from the manufacturer Formula
  • suspension changed to WP Suspension series-production components: Ø35 USD fork RCMA 3548, rear monoshock BAVP 4618
  • ECU changed to an Athena GET unit (as opposed to the Moto3 series spec unit from Dellorto on the RC250GP)

RC250RBR

For the Red Bull MotoGP Rookies Cup, KTM prepares identical, sealed motorcycles for each rider. The RC250RBR is essentially an RC250R featuring a few upgrades, such as an Akrapovič twin-pipe megaphone exhaust system without dB-killer, similar to the exhaust of the original RC250GP.[2] Previously the engine rev limit was reduced to 13,000 rpm to aid in extending the service life of the engine,[2] but has since been raised to the 13,500 limit of the base RC250R.

Husqvarna FR250GP

KTM purchased Husqvarna Motorcycles from BMW Motorrad in early 2013. As a marketing move by KTM to promote its new brand, Husqvarna entered the Moto3 paddock as a unique manufacturer in the 2014 and 2015 seasons with its FR250GP motorcycle. The FR250GP is however simply a badge-engineered RC250GP.[6] The "FR" designation comes from Husqvarna's series product naming conventions with the "F" signifying a four-stroke model and the "R" likely meaning "race". Husqvarna re-entered Moto3 beginning in 2020 with Max Biaggi's team Max Racing.[7]

Constructors' Championship Results

Season Points Position
2014 156 4th
2015 85 4th
2020 86 3rd
2021 166 4th
2022 279 4th
2023 307 3rd

GasGas RC250GP

KTM purchased a controlling stake in the Spanish motocross and trials bike manufacturer GasGas in 2019.[8] Similar to the previous move with Husqvarna, KTM entered GasGas as a unique manufacturer in the Moto3 championship starting from 2021 with Aspar Team.[9]

Constructors' Championship Results

Season Points Position
2021 266 3rd
2022 389 1st
2023 270 4th

Rider's Champions

CFMoto Moto3

KTM's Chinese partner CFMoto entered the Moto3 championship as a unique manufacturer with Prüstel GP starting from 2022, using rebranded RC250GP bikes.[10]

Constructors' Championship Results

Season Points Position
2022 130 5th
2023 113 5th

See also

  • Honda NSF250R
  • FTR M3
  • Suter MMX3
  • Mahindra MGP3O
  • Ioda TR
  • Oral Engineering OE-250M3R

References

  1. ^ Paolillo, Francesco (22 February 2014). "Prova in pista: La Moto Kampione del Mondo" (PDF). Moto.it Magazine. Archived (PDF) from the original on 22 February 2014. Retrieved 21 March 2020.
  2. ^ a b c d e Canet, Don (2 December 2014). "EXCLUSIVE FIRST RIDE: KTM RC250 Race Bikes". Cycle World. Retrieved 21 March 2020.
  3. ^ Robinson, David; Caron Dawe, Joseph (13 June 2014). "Take a look around Jack Miller's Moto3 machine". RedBull.com. Retrieved 21 March 2020.
  4. ^ a b Beeler, Jensen (20 February 2013). "Photos: Building the KTM RC250R Production Racer". Asphalt and Rubber. Retrieved 21 March 2020.
  5. ^ Wheeler, Adam (20 February 2013). "BUILDING A MOTO3 BIKE…". KTM.com. Retrieved 21 March 2020.
  6. ^ Beeler, Jensen (28 January 2014). "First Look at the "Husqvarna" Moto3 Race Bike". Asphalt and Rubber. Retrieved 21 March 2020.
  7. ^ Beeler, Jensen (10 November 2020). "This KTM Moto3 Bike Is Having an Identity Crisis". Retrieved 21 March 2020.
  8. ^ Turner, Jean (30 September 2019). "KTM Buys GasGas". Cycle News. Retrieved 18 November 2020.
  9. ^ "GASGAS motorcycles heads for Moto3™". MotoGP.com. Dorna Sports. 18 November 2020. Retrieved 18 November 2020.
  10. ^ "From China with fervor: CF Moto debuts in the 2022 Moto3 World Championship". GPone.com. 24 September 2021. Retrieved 8 January 2022.
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