Option reference

Sure-Grip Heavy-duty Sure-Grip positive-traction rear axle

performance · optional

1968 Plymouth Road Runner green hardtop rear view; representative Road Runner exterior context. 1968 Plymouth Road Runner 426 Hemi

Reference Details

Availability: optional
Category: performance
Code: Sure-Grip
Confidence: documented
Notes: Sure-Grip positive-traction axle was listed as heavy-duty Road Runner/GTX equipment; Hemi four-speed records support 3.54 standard and 4.10 optional gearing.

1 linked car page.

1968 Plymouth

426 Street Hemi, dual four-barrels, 425 advertised horsepower