Introduction
For 2019 a new GYTR® High Performance Kit for the YZ85 is developed in cooperation with YAMAHA RACING in Europe.
It is a result of their top-level knowledge combined with their GP 2-stroke racing experience.
The target of this kit is to improve the performance of the production YZ85.
Attention has been paid to reach a high performance level without forgetting the engine durability on heavy racetrack conditions as we have in Europe.
Fitment:
GYTR® recommends to use the kit for a new YZ85 model year 2018/2019
or an overhauled fresh engine to ensure performance and durability
Included in the kit:
| 1 | GYTR Cylinder head + bolt and washer | | 1 |
| 2 | GYTR Cylinder head insert + O-ring | | 1 |
| 3 | GYTR ported cilinder | | 1 |
| 4 | Blue silicone Radiator hose | | 1 |
| 5 | GYTR CDI unit | | 1 |
| 6 | Iridium race spark plug | | 1 |
| 7 | GYTR silencer kit | | 1 |
| 8 | GYTR exhaust pipe | | 1 |
| 9 | Vforce Reed valve system + 4 bolts | | 1 |
| 10 | GYTR Radiator cap 2.0 | | 1 |
| 11 | Kit needle | | 1 |
| 12 | Owners manual | | 1 |
| Spare parts ( not included in kit) |
| Reed valve spare | BR8VF0RCSP00 |
| Silencer fiber (package) | 1SRFIBERSP00 |
Cylinder head with bolts and washers
Special CNC machined cylinder head will come with studs.
• The cylinder head insert with O-ring
It has a special shape of the dome in order to optimize combustion
• GYTR 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. Porting is CNC reworked and after that they are manually checked to rework the last edges.
• Silicon Radiator hose
For better routing of coolant with the GYTR cylinder head
• GYTR CDI
It provides optimum ignition characteristics to improve the basic performance of the GYTR® Engine Kit.
• NGK Iridium race spark plug
High quality race sparkplug for long lasting reliability with high performance engine
GYTR kit Silencer
GYTR® designed this special aluminium silencer to reach the best engine power while ensuring the durability. (With laser engraved GYTR logo)
It also lowers weight of the bike.
• GYTR Exhaust kit Pipe
The GYTR® designed exhaust pipe has been improved to get more performance s made to provide a well-balanced performance and
throttle response in whole RPM ranges.
It also lowers weight of the bike
• VFORCE ® Reed Valve air intake system
Intake manifold with carbon-fibre reed valves for better throttle response and durability.
• GYTR high pressure radiator cap
The GYTR® radiator cap increases pressure up to 2.0 bar which prevents loose of coolant during races.
• kIt needle
Gas-needle to enhance the best performance of this GYTR kit.
• Kit Owners Manual
The manual gives you some additional information straight from the Yamaha Factory Racing experts to get the best performance and
durability out of your YZ85 engine.