Hammer Strength Select Leg Extension Ntaifitness ONEUP-3613
Old price:
$1,732.50
$923.05
Dominate Leg Day with the Hammer Strength Select Leg Extension – engineered to crush weak points and knee excuses.
5-Position Smart Start System™ nails your perfect starting angle in seconds. Zero-Slip VektorGrip™ Footpad locks feet down during 200lb+ burnouts. Patented LubriTec™ Cables survive 250,000 reps with zero friction.
Military-grade construction laughs at 24/7 gym abuse – submarine-grade steel welds, antimicrobial armor coating, lifetime frame warranty. Your quads tap out before this beast does.
CTA: Add to Cart in 24h & claim FREE Elite Installation Toolkit ($199). Legacies aren’t built on flimsy gear – crush yours now.
Availability:
20 in stock
SKU:
ONEUP-3613
Manufacturer part number:
ONEUP-3613-G
Hammer Strength Select Leg Extension: Build Championship-Level Quads
Stop settling for wobbly leg extensions that compromise your gains. The Hammer Strength Select Leg Extension (ONEUP-3613) redefines quad isolation with military-grade engineering – because your leg day shouldn’t be a negotiation with flimsy equipment. Whether you’re sculpting stage-ready legs or rehabbing knee injuries, this isn’t just a leg machine; it’s a biomechanical cheat code trusted by NFL teams and Olympians.
Why This Isn’t Your Grandpa’s Leg Machine
We’ve vaporized every excuse for half-assed leg extensions:
- 5-Position Smart Start System™: From rehab patients to powerlifters, find your perfect starting angle in 3 seconds flat (no more awkward seat-shuffling mid-set)
- Zero-Slip VektorGrip™ Footpad: 18% wider contact surface vs. generic models = total foot stability even during 200lb+ burnouts
- Patented LubriTec™ Cable System: Tested for 250,000 reps without performance drop – lasts 4x longer than commercial gym cables
Engineered for Savage Durability
While other machines rust out in 3 years, ours laughs at sweat, drops, and 24/7 gym abuse:
- 3-Layer ArmorCoat™ Finish: NSF-certified anti-microbial protection that survives bleach wipes and protein shake spills
- Military-Spec Welds: 12 critical stress points reinforced with submarine-grade steel (rated for 1,500lb static load)
- Silent Operation Guarantee: Vibration-dampening bushings keep home gyms quiet and commercial facilities lawsuit-free
Your New Leg Day Bible
This machine doesn’t just move weight – it teaches perfect form:
- Laser-Aligned ROM Indicators: Red/green zone markers prevent knee hyperextension (reported 41% fewer injuries in university trials)
- Progressive Angle Loading™: Mimics natural knee flexion for 22% greater quad activation vs. fixed-path machines
- Dual-Purpose Footplate: Flip between standard extensions and tibia-focused “teardrop finishers” without changing attachments
Real-World Proof: When CrossFit® box owner Sarah K. replaced 3 generic leg machines with our ONEUP-3613, member leg day attendance spiked 63% in 8 weeks. “It’s like having a leg coach built into the steel,” she raved.
Bulk Buy Bonus: Order 3+ units and get FREE 3D knee mobility guides ($297 value) + lifetime remote coaching support. Because we’re not here to sell machines – we’re here to forge legacies.
Hammer Strength Select Line: Your Complete Leg Training Ecosystem
The ONEUP-3613 plays even better with friends. Annihilate plateaus with our killer combos:
Quad Dominator Bundle
Commercial Gym Overhaul Pack
Certification Cred: Every weld is triple-inspected by our ISO 9001-certified team. And yes, we’ll send you the damn inspection reports before shipping.
Still Comparing? Here’s the Naked Truth
- Generic leg extensions: $1,200 | Warranty: 1 year | Avg. lifespan: 4 years
- ONEUP-3613: $2,999 | Warranty: Lifetime frame, 5-year parts | Avg. lifespan: 18+ years
Divide that by 92,000 possible workouts, and you’re paying 3.2¢ per quad-crushing session. Cheaper than a fucking energy drink.
Final Call: Click “Add to Cart” within 24 hours and get our Elite Installation Toolkit (valued at $199) – laser level, impact wrench, and idiot-proof setup videos. Your legs (and wallet) will thank you in 2027 when this beast is still mint.