# YX 150/160, ZS 155 Head types

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This is an article from the TBolt USA Tech Database, the store's free online library of pit bike technical info. The text below is the article as written.

## Article

### YX 150/160 CRF type head

This Type head allows the use of CRF50 and Lifan type intakes and Exhaust pipes
the easy features to notice are the intake port is nearly flat on top just like a CRF50 or Lifan type engine
also the Exhaust studs will be 6mm

### ![image](https://tboltusa.com/Tech_Data/uploads/images/YXheadW_CRF.jpg)

### YX 150/160 , ZS155 ,TB V2 & Takagawa +R

### (KLX type)

This type of head has klx110 type ports , 17 deg rear slant on intake and 8mm head studs
accepts KLX110 type intakes and Exhaust Pipes

![image](https://tboltusa.com/Tech_Data/uploads/images/YXHEAD_W_KLXports.jpg)

Here is some info on the cam covers too

![image](https://tboltusa.com/Tech_Data/uploads/images/IMAG0116.jpg)

## Tech Database sections

- [Tech Database home](https://tboltusa.com/store/tbolt-usa-pit-bike-minimoto-technical-info-database-tech-15.md)
- [Pit bike Buying and Ownership info](https://tboltusa.com/store/pit-bike-buying-and-ownership-info-tech-98.md)
- [Pit Bike Wiring Info](https://tboltusa.com/store/pit-bike-wiring-info-tech-56.md)
- [General Motorcycle Maintenance](https://tboltusa.com/store/general-motorcycle-maintenance-tech-95.md)
- [General Motorcycle Troubleshooting](https://tboltusa.com/store/general-motorcycle-troubleshooting-tech-97.md)
- [How Things Work](https://tboltusa.com/store/how-things-work-tech-115.md)
- [Identifying Parts, Bikes, and Engines](https://tboltusa.com/store/identifying-parts-bikes-and-engines-tech-96.md)
- [Parts Diagrams and Breakdowns](https://tboltusa.com/store/parts-diagrams-and-breakdowns-tech-120.md)
- [Pit Bike Installation Info](https://tboltusa.com/store/pit-bike-installation-info-tech-99.md)