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Koyo has released a half-length radiator for pure racing applications which typically involve short sprints, small track, autocross, and gymkhana.  This is not recommended for street usage because the smaller core is not suited for stop and go traffic where the smaller core runs into decreased air flow.


The reduced length of the radiator allows for an off-center mounting position, which keeps manifold heat away from its core.  OEM electric fans will bolt on without any modifications.  Unique sliding fan mounts allow for an easier installation of aftermarket universal slim fans, freeing up additional engine bay room and reducing weight.  


•  Koyo “Hyper” Series 48mm Core Technology
•  Reduced size and weight
•  Exclusive brushed aluminum finish
•  Nocolok-R Brazing
•  Precise Tube and Fin alignment
•  Billet aluminum filler neck
•  1/8” NPT Accessory Fitting and threaded plug
•  Billet aluminum drain plug

Evo 8/9 Koyo Half Size Radiator

SKU: HH032412
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