QA1 TD601 Stocker Star D-Adj Rear Shock 11-15-7/8 in. Stud/Stud Mustang Ford

Vehicle Fitment

• 1964-1973 Ford Mustang (All Trims incl. GT, Fastback, Convertible, Boss, Mach 1, Shelby - Rear)
• 1960-1970 Ford Falcon (All Trims - Rear)
• 1966-1970 Ford Fairlane (All Trims incl. GT, GTA, Cobra - Rear)
• 1968-1971 Ford Torino (All Trims incl. GT, Cobra - Rear)
• 1960-1969 Mercury Comet (All Trims - Rear)
• 1967-1973 Mercury Cougar (All Trims incl. XR-7, Eliminator - Rear)
• 1968-1971 Mercury Cyclone (All Trims incl. Spoiler, GT - Rear)

Fitment Notes

• Rear shock only - fits using OEM stud upper and stud lower shock mounting locations on all listed vehicles.
• If suspension has been modified from stock configuration, contact QA1 to confirm fitment based on actual compressed and extended length requirements.
• For single-adjustable valving on the same platform (same dimensions, stud/stud), order QA1 TS601. For non-adjustable, order QA1 TN601.
• Sold individually - most vehicles require two (one per side). Verify quantity before ordering.

Features

• Independent double-adjustable valving - 18 positions of rebound and 18 positions of compression on separate knobs (324 total combinations) for the ultimate in ride and handling fine-tuning.
• Adjustments made at the base of the shock with both knobs accessible on the car - no removal required to change settings.
• One-piece forged machined aluminum body is bright-anodized for exceptional looks, corrosion resistance, and reduced unsprung weight vs. OE steel shocks.
• 5/8 in. hard-chromed centerless-ground piston rod for stiffness, seal longevity, and consistent valving performance.
• Double-lip wiper seals keep debris and moisture out for long-term reliability and consistent damping.
• Deflective-disc valving technology for improved sensitivity and consistent response across the full adjustment range.
• Bolt-in installation using factory shock mount locations - no modifications required.
• 100% dyno tested and serialized; serviceable and rebuildable by QA1 authorized service centers; proudly made in the USA.

Specifications

• Position: Rear
• Series: Stocker Star (TD601)
• Adjustability: Double-Adjustable (18 rebound x 18 compression = 324 combinations)
• Internal Construction: Twin-Tube
• Compressed Length: 11.00 in. (center-to-center)
• Extended Length: 15.875 in. (15-7/8 in., center-to-center)
• Stroke: 4.875 in.
• Upper Mount: Stud
• Lower Mount: Stud
• Shock Body Material: Forged Machined Aluminum (bright anodized)
• Piston Rod: 5/8 in. Hard-Chromed Centerless-Ground
• Quantity: Sold Individually
• Warranty: Limited Lifetime (register at QA1 before installation)

Included Components

• 1x Stocker Star Double-Adjustable Rear Shock (TD601, stud/stud)

Product Description

The QA1 TD601 is a Stocker Star double-adjustable rear shock designed as a direct bolt-in replacement for 1964-1973 Ford Mustangs and a range of other Ford and Mercury applications including the Falcon, Fairlane, Torino, Comet, Cougar, and Cyclone. It uses the factory stud upper and stud lower shock mount locations on all listed vehicles, making installation straightforward without any fabrication or modification. The one-piece forged machined aluminum body is bright-anodized for a sharp appearance and superior corrosion resistance, while the 5/8 in. centerless-ground chrome piston rod and double-lip wiper seals provide long-term reliability and consistent damping performance.

The double-adjustable valving delivers 18 independent positions of both rebound and compression on separate knobs, providing 324 total tuning combinations that can be dialed in at the base of the shock without removal. This makes the TD601 the ideal choice for drivers who want the absolute best handling and performance from their classic Mustang or Ford/Mercury application - whether fine-tuning for street comfort, autocross grip, or performance driving. For single-adjustable valving on the same platform and dimensions, order the TS601. Sold individually - most vehicles require two. Register at QA1 before installation for Limited Lifetime Warranty coverage.