ROK SV (Dell’Orto) Engine

Description

Vortex ROK SV is one of the latest additions to the ROK range, designed to combine reliability and high performance: a 125cc single-cylinder reed-valve two-stroke, liquid-cooled, with balancer shaft and integrated electric start. Faithful to the ROK philosophy of reliability, easy management and stable regulations.

Technical specifications

• Displacement: 125cc, single cylinder, two-stroke, reed valve intake in the crankcase
• Cooling: liquid, external water pump
• Bore x stroke: 54×54 mm
• Balancer shaft, centrifugal dry clutch, integrated electric starter
• Max power: 34 HP @ 12,500 rpm
• Max torque: 20.2 Nm @ 11,500 rpm
• Max rpm: 15,000 (electronically limited, Selettra 034-IG-30)
• Radial bearings C4, 5/3 transfer ducts, CNC-machined cast-iron cylinder

Supplied with

• Dell’Orto VHSH Ø30 mm carburettor and Dell’Orto fuel pump
• Selettra ignition with 15,000 rpm limiter (034-IG-30)
• KG Nitro 23 intake silencer (7-SA-24 / 8-SA-24)
• Moulded exhaust with supplementary exhaust silencer
• Complete cooling system (radiator and water pump with pulley)
• Wiring harness with battery holder

Battery and battery charger not included.