Please check the size of your bolt from your engine before ordering as there are some variations between Black Top, Silver Top and ST170 engines.9mm x 37.5mm bolts which is part no (Z044).
8mm x 44mm long.
Good insurance against rod failure.
Ideal for road and race engines.
9mm x 37.5mm bolts also available (Z044)
Stage 1 - up to 180bhp - Zetec to Mazda MX5 N7 Clutch (MX5-014)
MK1 Cortina Steering Box MX5 N7 Gearstick Surround and Tunnel Infill Plate Kit (MX5-043) 
