GENUINE YAMAHA TECHNOLOGY RACINGPERFORMANCE PRODUCTS

YZ125 HIGH PERFORMANCE KIT

For 2016, GYTR® introduce the new High Performance Kit for the YZ125, the new standard in off-the-shelf performance from Yamaha.

The new engine kit has been developed in cooperation with YAMAHA RACING and it is a result of their extensive knowledge combined with their GP racing experience. The target of the kit is to improve the overall performance of the production YZ125, whilst specific attention has been paid to ensuring that a high performance level is reached, without sacrificing engine durability on heavy racetrack conditions.

Fitment:GYTR® recommends that the High Performance Kit is only fitted to a brand new 2016 YZ125 or, where an older model is used, the engine has been freshly overhauled to ensure performance and durability*.

This means a YZ125 from 2015 and older can also make use of this kit.

GENUINE YAMAHA TECHNOLOGY RACINGPERFORMANCE PRODUCTS

What is GYTR®?GYTR® stands for Genuine Yamaha Technology Racing and are performance parts, fully developed by Yamaha, in cooperation with Factory racers and test riders to ensure the needs of racers are satisfied.

*No warranty is provided with these performance parts

PARTS NAME QTY.

1 Cylinder head with removable insert 1

2 Ported Cylinder 1

3 Piston assy (incl piston ring, piston pin and 2 circlips) 2

4 VFORCE® reed valve air intake system 1

5 CDI unit 1

6 Exhaust Pipe 1

7 Silencer 1

8 Heavy Magneto rotor unit 1

9 Carburettor Setting Kit 1

10 Kit Manual 1

YZ125 GYTR® Kit contents:

YZ125 GYTR® Kit contents:

Cylinder head with removable insertSpecial cylinder head fully machined with detachable combustion chamber’s insert. The insert can be replaced in case of damage.

PistonThe piston is developed by GYTR® and comes complete with piston ring, piston pin and two (2) circlips. The GYTR® piston has a different profile and material compared to standard piston. One (1) spare piston assembly is included in the kit.

VFORCE ® Reed Valve air intake systemIntake manifold with carbon-fibre reed valves for better throttle response and durability.

Exhaust PipeThe exhaust pipe is made to provide a well-balanced performance and throttle response in both middle and high RPM ranges.

Ported cylinderPorted 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.

SilencerGYTR® designed the titanium silencer to reach the best engine power while ensuring the durability.

CDIThis digital CDI is mapped by GYTR® with latest 2016 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 unitAdditional 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 3 main jets and 2 needles to adjust the kit accordingly to weather, height and track conditions. Advice setting is given in kit manual.

Kit ManualThe 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.

Note!This Manual must always be treated as an addition to the 2016 YZ125 Owner’s Service Manual.

The GYTR® Kit parts only improve the performance as a set. When individual parts are used, performance and durability cannot be guaranteed.

Power & Torque Curves:

2016 YZ125 Power Curve

2016 YZ125 Torque Curver

GYTR® YZ125 High Performance Kit:

1SR-HIPER-KT-00

www.yamaha-motor.eu/uk/accessories