In comparison to the 80 hp version of the Rotax 912 series the 100 hp product line offers more power while keeping the weight. This engine series offers a time between overhauls of 2.000 hrs and the best power to weight ratio in its class - no surprise that this engine is the best selling 4-stroke engine. This series is available as non-certified (Rotax 912 ULS) and certified engine (Rotax 912 S) according to FAR33.

相比Rotax 912系列80马力的发动机，100马力发动机产品线在保持重量的同时能够提供更大的动力。该发动机系列能够提供大修间隔时间2000小时和在它的级别上提供最好的动力重量比率。这一点对于一款销量最好的4冲程发动机来说是毫无疑问可以做到的。这个系列根据FAR33存在两款发动机：未认证的Rotax 912 ULS发动机和已认证的Rotax 912 S发动机。

4-cylinder四缸

4-stroke liquid/air-cooled engine with opposed cylinders四冲程液/风冷发动机对抗气缸

dry sump forced lubrication with separate oil tank带有独立油箱的干滑油槽压力润滑

2 carburetors二式化油器

mechanical fuel pump机械式燃油泵

dual-electronic ignition双电子点火

electric starter电启动器

propeller speed reduction unit螺旋桨减速单元

air intake system进气系统

Type型号：912 ULS

Performance性能：69,0 kW (95,0 hp) @ 5500 1/min(rpm)

Torque扭力：128 Nm (94,0 ft.lbf.) @ 5100 1/min (rpm)

Max. RPM最大转速：5800 1/min (rpm)

Bore缸径：84,0 mm (3,31 in.)

Stroke行程：61 mm (2,40 in.)

Displacement排气量：1352,0 cm³(82,6 cu.in.)  

Compression Ratio压缩比：10,5:1

Ignition Unit点火单元：DUCATI double CDI

Ignition Timing点火时间：4° bis/up to 1000 1/min (rpm) Darüber / above 26°

Spark Plugs火花塞：part no. 297 940

Generator Performance：发动机性能：250 W DC @ 5500 1/min

Voltage电压：13,5 V