{"type":"firestarter.listing","listing":{"id":"lst_xao9dNLt","product_name":"Basilisk Stack Loaded Leg Extension / Leg Curl","category":null,"description":"If you’re here, you’re above the whole “skipping leg day” thing. A dedicated leg machine? No shortcuts. Big respect. A dedicated leg machine with a 310 LB stack and a strength curve we obsessed over for years? Now we’re talking.Most leg extension/curl combos in this class tap out around 250 lbs. The Basilisk gives you 210 or 310 — your call. Just getting started? Go 210. Planning to build Quads of the Gods? Go 310. And if you outgrow the 210, there's a 100 LB upgrade kit with your name on it (figuratively).But let’s be honest — the stack number isn’t the magic. The strength curve is.We didn’t just slap a cam on and call it a day. We fine-tuned the geometry and pivot points so extensions and curls feel right. Smooth where they should be. Challenging where they need to be. No weird dead spots. No “why does this feel off?” moments. Just clean resistance the whole way through.That 40% slope on the seat? Not random. It’s the sweet spot.We tested, we did the math (well...paid someone to). It puts your hip flexors where they need to be for quad isolation, and lines up your hamstrings properly for curls. We tested it. A lot. Probably more than we should admit. The result: it works.Fit-wise, we’ve got you covered.The back pad adjusts. Seat and leg positions adjust enough to fit lifters from 5'3\" to 6'2\" without feeling like a compromise. The leg holder gets out of your way when you need it to. And the stack can go left or right — because your gym layout should adjust to you. Not the other way around.Now let’s talk durability.Aluminum pulleys. TPU cable. Not sexy… until your machine doesn’t jam mid-set.Cheap machines bind. Cables wear out. That’s exactly why we built the Basilisk the way we did — smoother operation, longer lifespan, and backed by our no-nonsense warranty.We also kept the height low — on purpose.Tall machines waste vertical space. The Basilisk fits where commercial units won’t, which makes it just as at home in a garage as it is on a gym floor. And if you are ","images":["https://cdn.shopify.com/s/files/1/0654/3346/9125/files/l-stk-lelc-ma-set-01.jpg?v=1776769433","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/s-stk-lelc-ma-set-01.jpg?v=1776769433","https://cdn.shopify.com/s/files/1/0654/3346/9125/files/STK-LELC-UPGR-SET-01.jpg?v=1782138369"],"price":2699.99,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:45.215Z"},"share_url":"https://firestarter.network/l/lst_xao9dNLt","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_xao9dNLt' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Basilisk Stack Loaded Leg Extension / Leg Curl' and a budget_max comfortably above $2699.99 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}