![50 Caliber Racing 88cc Stage 1 Big Bore Top End Kit Compatible with 1992-up Z50R, 2000+ XR50R and CRF50 [4446]](https://m.media-amazon.com/images/I/71uaMRGlbFL.jpg)









🔥 Upgrade your pit bike, dominate the track! ⚡
The 50 Caliber Racing 88cc Stage 1 Big Bore Top End Kit is a precision-engineered upgrade designed for 1992 and newer Z50R, XR50R, and CRF50 pit bikes. Featuring a lightweight aluminum cylinder with a durable steel sleeve, a high-compression 52mm piston, and all necessary gaskets, this kit delivers a noticeable power increase while maintaining reliability and efficient heat dissipation. Ideal for riders seeking a cost-effective performance boost with straightforward installation.
| Manufacturer | 50 Caliber Racing |
| Brand | 50 Caliber Racing |
| Item Weight | 3 pounds |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 50 Cal Big Bore Kit Stage 1 [4446] |
C**N
Five Stars
Fast shipping and a good quality parts
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