these are a brand new set of crower titanium retainers and JDM rev hard springs for a B series honda/acura motor b16a, b18c1, b18c5, b20b, b20z,b21a1,b20a any as long as they have a vtec head, they are upgraded in order to run large cams, or the rev the motor up past 8200 plus upwards of 9500 rpm's they cost $500 new, i will sell them for 350 buy it now with free shipping this will work good with toda, jun, skunk2, crower, or crane cams.

 

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