Our Japspeed engine mounts noticeably improve throttle and turn-in response, as confirmed by professional drivers during road and track testing sessions. Enhancing the appearance of any engine bay, the mount bodies are manufactured from aircraft grade 6061-T6 aluminum anodized black, and are complemented by stiff poly bushings. Features: Manufactured from 6061-T6 aluminium Fitted with stiff poly bushings Engineered to reduce motor movement under load and hard cornering Improves throttle and turn-in response Note: Bolts included with this product must be checked for tightness before installation. Fitment: Nissan Silvia 200sx S13 / S14 / S14A / S15 2.