PORSCHE 915 1ST GEAR SYNCHRO TEETH
If your transmission grinds going into 1st gear then it's likely you'll need to replace the synchro teeth or sometimes termed as dog ring. No need to replace the gears if they are fine otherwise. These are the updated teeth and direct replacement for '76-'86 915. Earlier transmissions will need to update the stop block, anchor block, brake band, shift hub and shift sleeve.