Traxxas Rear Progressive GTR RC Shock Spring Blue 1.042 Rate (2) - 8445A

The Traxxas 8445A rear GTR shock springs are progressive-rate replacement springs designed for Traxxas GTR shock absorbers, sold as a pair in blue. Carrying the part number TRX8445A, these springs feature a 1.042 progressive rate, meaning the spring stiffness increases as compression deepens — offering a more compliant feel over small bumps while firming up under hard landings or aggressive driving. They are listed under Parts By Model 85086-4, making them a direct reference part for owners tracing compatible components for that specific Traxxas build.

Key Features

• Progressive 1.042 rate spring design firms up under load, giving a softer initial stroke that stiffens as compression increases
• Blue anodised finish allows quick visual identification when setting up or swapping between different spring rates
• Compatible with Traxxas GTR long-stroke shock absorbers — a direct-fit replacement requiring no modification
• Sold as a pair, covering both rear positions in one purchase
• Part number TRX8445A makes it straightforward to cross-reference and reorder

What's Included

• 2 x Traxxas GTR rear shock springs (blue, progressive 1.042 rate)

What You Need

• Traxxas GTR shock absorber bodies (if not already fitted to your vehicle)
• Appropriate tools for shock disassembly and reassembly (e.g. spring removal tool or small flathead screwdriver)