IMR Add-On Packs let you expand and customize your Impact Marble Racing tracks with individual track pieces, supports, and accessories. Whether you need more straights for longer runs, extra supports for taller builds, or specialty pieces like funnels and splitters, these packs give you exactly what you need without buying a full set.

Track Pieces: Add more Straights for extended runs, Turns for direction changes, Impact Zones with pegs for added excitement, and Funnels to merge lanes. Mergers & Splitters let you combine or divide marble paths for multi-lane racing action.

Supports: Build taller tracks with the Supports - All Types pack featuring 1-high, 3-high, and 7-high posts, or grab the Supports - 7 High pack for maximum elevation. Both are available in Redline (black) and color options.

Accessories: Complete your track with Start/Finish Blocks, Flags & Banners for race-day authenticity, and Inserts for half-track customization. Need more marbles? Grab standard Marbles, glow-in-the-dark GLOW Marbles, or the Additional Marble Colors pack with holographic and pearl finishes.

The IMR Add-On Kit bundles a variety of pieces for the best value if you want a mix of everything.

All Impact Marble Racing products are compatible with IMR Circuit, Speedway, and Grand Prix sets. Made in the USA with free shipping on orders over $99.