52mm
52mm is the same as 2 1/16". Both of these sizes fit perfectly in the stock clock position. Some advise from Chucky do not buy the SPI boost gauge b/c it sucks ass. I bought Spi and quickly trashed the cheap pos to buy a greddy electronic gauge.
52mm is the same as 2 1/16". Both of these sizes fit perfectly in the stock clock position. Some advise from Chucky do not buy the SPI boost gauge b/c it sucks ass. I bought Spi and quickly trashed the cheap pos to buy a greddy electronic gauge.