GT2 Timing Belt And Pulley Kit For 3D Printers, 21-Piece Bundle High-Quality Belts Of Various Lengths, Eight 20-Tooth Pulleys, Four Tension Springs, And An Allen Wrench

Upgrade your 3D printer’s drive system with the GT2 Timing Belt And Pulley Kit For 3D Printers, a comprehensive 21-piece bundle designed for precise, durable, and easy-to-tune motion. This all-in-one kit brings together eight timing belts of varied lengths, eight GT2 20-tooth pulleys with a 5 mm bore, plus four tension springs and a convenient Allen wrench, so you can refresh multiple axes or tailor setups for different builds without grabbing parts piecemeal.

Why this kit stands out

• Broad belt coverage for most builds: Eight belts in lengths 110, 112, 122, 158, 200, 280, 300, and 400 mm give you the flexibility to outfit small printers up to larger formats, adapters, and custom axes without hunting for mismatched parts.
• Precise, slip-resistant drive: The 20-tooth GT2 pulleys with a 5 mm bore pair with the 6 mm wide belts to dramatically reduce belt slip and backlash, delivering cleaner curves and repeatable prints even at higher speeds.
• Durable, long-lasting components: Aluminum alloy pulleys with surface oxidation treatment stand up to daily use and wear, while the premium rubber belt material maintains flexibility and positioning accuracy over time.
• Easy, adjustable tensioning: The four tension springs give you controllable, repeatable tension across axes, helping you dial in print quality for different materials and temperatures. The included Allen wrench makes tensioning quick and precise.
• All-in-one convenience: With everything you need in one kit, belts, pulleys, springs, and tool, you can plan proactive maintenance, upgrades, or revisions without multiple orders or compatibility concerns.

What’s included

• 8 x Timing belts (6 mm wide) in lengths: 110 mm, 112 mm, 122 mm, 158 mm, 200 mm, 280 mm, 300 mm, 400 mm
• 8 x GT2 20-tooth, 5 mm bore synchronous pulleys
• 4 x Tension springs (locking-type)
• 1 x Allen wrench

Ideal use scenarios

Whether you’re building a new printer from scratch, upgrading an existing machine, or performing routine maintenance, this GT2 timing belt kit keeps drives accurate and reliable. It’s especially well-suited for:

• Replacing worn or stretched belts on X, Y, or Z axes to restore precision
• Customizing printers to accommodate newer builds or different bed sizes
• Upgrading to a more consistent belt and pulley combination to minimize ghosting and layer misalignment
• Setting up CNC modules, milling heads, or other equipment that relies on GT2 drive systems

Printed results you can count on

• Consistent positioning accuracy across the entire print area thanks to the round tooth profile that meshes smoothly with each pulley
• Reduced maintenance downtime due to a ready-to-use, all-in-one kit
• Improved print reliability when switching materials or changing print speeds, thanks to adjustable tension and robust hardware

Tips for best results

Before installation, verify belt lengths against your printer’s existing path and measure pulleys to ensure compatibility with your drive system. When installing, run belts with gentle curves to preserve edge integrity, and set a balanced tension across all axes using the included wrench to achieve uniform tension. Remember to keep small parts away from children.