Motocross

GasGas MC 50

Motocross, 50cc 2T, 2027, US version

Partly verified

Gearing

4 of 5 filled

Stock front sprocket: 11T; Owner's manual p. 123, checked 2026-09-28 (source 1)
Stock rear sprocket: 40T; Owner's manual p. 123, checked 2026-09-28 (source 1)
Chain pitch: 415; Owner's manual p. 123, checked 2026-09-28 (source 1)
Stock chain links: Not yet verified
Stock final drive ratio: 3.64 : 1; Calculated from the stock sprockets

Wheels and tires

4 of 4 filled

Front rim: 12 x 1.50; Manufacturer spec sheet (research), checked 2026-09-27 (source 2)
Rear rim: 10 x 1.60; Manufacturer spec sheet (research), checked 2026-09-27 (source 2)
Front tire: 60/100-12 36J TT; Owner's manual p. 124, checked 2026-09-28 (source 1)
Rear tire: 2.75-10 38J TT; Owner's manual p. 124, checked 2026-09-28 (source 1)

Suspension

6 of 7 filled

Fork: WP XACT (air fork); Owner's manual p. 124, checked 2026-09-28 (source 1)
Fork travel: 165 mm (6.5 in); Owner's manual p. 123, checked 2026-09-28 (source 1)
Shock travel: 190.5 mm (7.5 in); Owner's manual p. 123, checked 2026-09-28 (source 1)
Stock fork spring rate: Not yet verified
Stock shock spring rate: 30 N/mm; Owner's manual p. 125, checked 2026-09-28 (source 1)
Static sag, bike only: 30 mm (1.2 in); Owner's manual p. 125, checked 2026-09-28 (source 1)
Race sag, rider on: 80 mm (3.1 in); Owner's manual p. 126, checked 2026-09-28 (source 1)

Fluids and capacities

3 of 3 filled

Coolant capacity: 700 ml (23.7 fl oz); Owner's manual p. 120, checked 2026-09-28 (source 1)
Premix ratio: 60:1; Owner's manual p. 124, checked 2026-09-28 (source 1)
Fuel capacity: 2.3 L (0.61 gal); Owner's manual p. 124, checked 2026-09-28 (source 1)

Maintenance

3 of 3 filled

Tire pressure (off-road): 1.0 bar (14.5 psi) front and rear; Owner's manual p. 124, checked 2026-09-28 (source 1)
Chain slack: 35-38 mm (1.38-1.50 in); Owner's manual p. 67, checked 2026-09-28 (source 1)
Spark plug and gap: BRISK AR10C, gap 0.70 mm; Owner's manual p. 120, checked 2026-09-28 (source 1)

Dimensions

3 of 3 filled

Seat height: 653 mm (25.7 in); Manufacturer spec sheet (research), checked 2026-09-27 (source 2)
Wheelbase: 1026 mm (40.4 in); Manufacturer spec sheet (research), checked 2026-09-27 (source 2)
Weight: 43.5 kg (96 lb); Owner's manual p. 124, checked 2026-09-28 (source 1)

Solid marks are owner's-manual pages; hollow marks are manufacturer web or spec-sheet figures still waiting on a manual page. Last reviewed 2026-09-28. Rows marked not yet verified are blank on purpose.

What's missing

18 of 24 fields read off a manual page.

Not yet verified (2): chain links, fork spring rate.

From a spec sheet, awaiting a manual page (4): front rim, rear rim, seat height, wheelbase.

See coverage for every bike

Use this bike

Tools for this bike

Compare with

Buying parts

The stock sizes and specs this bike left the factory with, each with its source. Take them to any shop. Retailer links will appear here once a store approves MotoXSports.

Chain: Chain pitch 415 Owner's manual p. 123
Sprockets: Stock front sprocket 11T Owner's manual p. 123Stock rear sprocket 40T Owner's manual p. 123
Tires: Front tire 60/100-12 36J TT Owner's manual p. 124Rear tire 2.75-10 38J TT Owner's manual p. 124
Coolant: Coolant capacity 700 ml (23.7 fl oz) Owner's manual p. 120
Suspension springs: Stock shock spring rate 30 N/mm Owner's manual p. 125

2 part specs not yet verified; see data coverage.

Garage tool 01

Sprocket calculator

Put your current gearing in Setup A and the setup you are considering in Setup B. Everything updates as you type.

Start from a bike's stock gearing

Pick a bike to fill both setups with its stock sprockets.

Front sprockets 10–16 teeth, rear 34–60. Values outside that range are brought back to the nearest limit.

Setup A — what you run now

Front teeth

Rear teeth

Setup B — what you are thinking about

Front teeth

Rear teeth

Final drive ratio

— — : 1

—

Pull at the wheel—

Top speed—

Chain (est.)—

A —

B —

Taller · more speed Shorter · more pull

—

Ratios are exact. The chain figure is an estimate of roughly one link per two teeth of change — confirm against your manual before ordering.

Sources

1
GASGAS Owner's Manual 2027 MC 50, Item no. 3215282en (17/08/2026); owner-supplied copy from the KTM Group print-on-demand portalpp. 67, 120, 123, 124, 125, 126Manual page, verified. Covers stock front sprocket, stock rear sprocket, chain pitch, front tire, rear tire, fork, fork travel, shock travel, stock shock spring rate, static sag, bike only, race sag, rider on, coolant capacity, fuel capacity, premix ratio, tire pressure (off-road), chain slack, spark plug and gap, weight; checked 2026-09-28.
2
GASGAS 2027 MC 50 technical specifications (gasgas.com, US)Manufacturer web or spec sheet, research level. Covers front rim, rear rim, seat height, wheelbase; checked 2026-09-27.

Always confirm against the manual for your exact year before ordering parts or setting up suspension. Torque specs are deliberately not published here. How we verify a value.

My settings

Date / track
Sprockets run
Race sag / free sag
Fork air pressure or spring
Fork clickers (compression / rebound)
Shock clickers (low / high / rebound)
Tire pressures (front / rear)
Notes

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