Rotax 503

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The Rotax 503 is an inline 2 cylinder, 2 stroke, fan cooled engine. It features piston ported intake, dual capacitor discharge ignition (DCDI), pull start, pulse driven diaphragm fuel pump and is available in either a single or dual carburetor configuration.

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Specifications

Displacement:	30 cu in	497 cc
Bore:	2.834 in	72 mm
Stroke:	2.401 in	61 mm
Theoretical Compression Ratio:	10.8:1
Effective Compression Ratio:	6.2:1
Single Carb Ramp Weight:	99 lbs	45 kg
Dual Carb Ramp Weight:	103 lbs	47 kg
Ignition Timing:	16° BTDC
Single Carb Power Rating:	46 HP	34 kW
Dual Carb Power Rating:	50 HP	37 kW
Price:	$3,938 U.S.D.

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Accessories

Item	Price
Meg Electric Start Kit	$835
Oil Injection Tank	$173.99
Key West Regulator/Rectifier	$65