Action (QA) Fast throttles are used to decrease the angle the handle must be twisted to fully open the throttle mechanism within the carburetor. When a carburettor with larger throttle diameter is fitted the throttle has further travel up and down the carburettor which can lead to a tense throttle hand and the extra fine effort becomes annoying. Comfortable alternatives are provided by the DOMINO QA throttle grips. The Italian company has made a name for themselves on the motorcycle sport scene. All of their throttle grips are manufactured from aluminum and fit 22mm handlebar tubes! The DOMINO QA stroke accelerator reduces the angle of movement required considerably. In combination with a common 30mm carburettor, the angle is reduced to 54. Small, but not too small for good mid-range throttle dosage to not be possible. If you prefer a dual wired type, the DOMINO 90 is ideal. This QA accelerator features a weight-saving design in an eye-catching black and gold. A special feature of this range is the ‘Racing Double’, which also possesses a dual-wired mechanism. These items are ideal for converting to either a twin cylinder / twin carburettor set up. They include blue anodized screws and simple black knobs. The smallest twist angle is provided by the ‘extreme stroke’ QA throttle, which requires only 45 to operate at full throttle on a 30mm carburettor. Its ‘on/off’ design is ideal for the sprinters among us. Tip: Based on the twist angle value, with DOMINO QA throttle grip, the relationship between the twist angle and the throttle opening in mm can be determined. Per mm of throttle movement a certain amount of degrees must be traveled by the grip, depending on the size of the throttle. For example: 24mm throttle x 2.3 = 55.2 throttle twist angle. SIP-TIP: Don’t forget to order a suitable cable and fixing fitting.