Spartaks Strength KB2406 6-Post Full Rack/Smith Machine

Six posts, zero shortcuts. The KB2406 takes the KB2404 functional trainer platform and puts it on an extended six-post frame for added stability, storage potential, and training versatility — all on the same 9-gauge steel construction as the rest of the KB24 Series. Choose the Smith Machine variant for a smooth, guided bar path, or the Full Rack variant for traditional free-weight squats, bench, and overhead work.

Every KB2406 comes with dual 165LB weight stacks, upgradable to 300LB, and Tornado Arms for dynamic, multi-angle cable work. Because the Smith machine rail needs the extra room, the KB2406 ships on the 64" depth base only.

Every KB24 rack is built on the same modular platform. As your training evolves, you don't need to sell the KB2406 and start over — we sell the parts to upgrade it directly into the KB2408 or KB2410. Your frame stays, your investment stays, and your rack simply grows with you.

• Guided Smith Machine (Variant) — Smooth, linear-bearing guided bar path for safer squats, bench press, and shoulder press. The Full Rack variant skips the Smith carriage for traditional free-weight lifting in the same frame.
• 6-Post Frame — Extended structure for added stability, storage potential, and training versatility beyond the standard 4-post design.
• Central Lat Pulldown & Low Row — Integrated directly into the frame for efficient workouts with fewer attachments to manage.
• Tornado Arms — Pivoting cable arms with 180° horizontal rotation, 50° vertical adjustment, a 360° swiveling cable head, and 7 lock positions — covering flys, crossovers, curls, tricep extensions, and shoulder raises from one pair of arms.
• Dual Weight Stacks — 165LB per side, upgradable to 300LB, to match your strength level and training goals.
• 9-Gauge Steel Construction — 3.2mm thick steel, roughly 28% thicker than standard 11-gauge (2.5mm), eliminating frame flex during heavy lifts.
• Future-Proof Design — Start with the KB2406 and upgrade later into the KB2408 or KB2410 using shared attachments.

Training Stations: Full Rack, Smith Machine, Low Row, Lat Pulldown, Tornado Arm System, Multi-Grip Pull-Up Bar.

• 2× Spotter Arms — Safety support for unracked lifts.
• 2× J-Hooks — Barbell holders for squats, bench, and overhead work.
• 6× D-Handles — For cable attachments and accessory work.
• 1× Multi-Grip Pull-Up Bar — Multiple grip positions for pull-ups and chin-ups.