2019 GYTR® YZ125 High Performance Kit Contents
Cylinder Head with Studs
• Special CNC machined cylinder head will come with extra studs bolt so original cylinder will keep its studs. Which also result in a more secure and easy installation.
The Cylinder Head Insert
• It has a special shape of the dome to maximize combustion .
CNC Ported Cylinder
• The Ported cylinder developed by GYTR®. Cylinder improves airflow of the ports. Comes with new oil seal pre-installed for the shaft of the exhaust valve system. It is CNC machined and manually checked and reworked the last edges.
Piston Assy
• The piston is developed by GYTR®. Complete with piston ring , piston pin and 2 circlips. A GYTR piston has a different profile and material compared to standard piston. 1 Spare piston assy is included in the kit.
VFORCE ® Reed Valve Air Intake System
• Intake manifold with carbon-fibre reed valves for better throttle response and durability.
Exhaust Pipe
• The GYTR® designed exhaust pipe has been improved to get more performances made to provide a well-balanced performance and throttle response in whole RPM ranges.
Silencer
• GYTR® designed the titanium silencer to reach the best engine power while ensuring the durability.
CDI
• This digital CDI is mapped by GYTR® with latest map. It provides optimum ignition characteristics to improve the basic performance of the GYTR® Engine Kit. Very Important: This CDI needs resistor’s type spark plug (not included in the kit). The standard YZ spark plug has resistor.
Magneto rotor unit
• Additional magneto rotor, with higher inertia mass than in stock YZ125. Especially beneficial for riders that want a more torquey engine.
Carburettor Setting Kit (set)
• Contains a set of 5 main jets , 1 slow jet and 1 special made needle to adjust the kit accordingly to weather, height and track conditions.
• Advice setting is given in kit manual.
Exhaust Power Valve
• Improves power band and throttle response of this power full kit.
Carbon Ignition Cover
• Reduces weight with 34 gram! and stronger than original cover.
• GYTR logo is underneath transparent coating layer for long lasting good finish.
Clutch Spring (New)
• The clutch springs replaces the preload washer. The clutch spring has a higher preload to prevent clutch slip in certain race conditions like deep sand or mud.
Kit Manual (Updated)
• The Kit Manual gives you some additional information straight from the Yamaha Factory Racing experts to get the best performance and durability out of your YZ125 engine.