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Receive by Oct 12
Remanufactured
Precor Discovery Series Leg Extension
$2,445.00
Save 56%
New retail $5,670 —
you save $3,225 buying remanufactured
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Remanufactured to full mechanical spec, covered from the day it lands.
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Machine overview
Condition: Remanufactured
Warranty: 1 Year Parts & Labor (Extended Available)
Returns: 30-Day Returns & Exchanges
Shipping: Driveway Delivery, or Inside Delivery & Assembly
Receive by: Oct 12
How It Ships: Fully Assembled
Delivery options
How delivery works
Your item’s shipping method and price are confirmed in the shipping calculator and at checkout. Here is what each delivery path means.
Driveway freight delivery
Your equipment is palletized and protected. The freight carrier schedules delivery, then uses a liftgate to lower it to your curb or driveway. Moving it inside and unpacking it are up to you.
Inside delivery & assembly
When selected and available for your address, the delivery team brings the equipment into the room, assembles and tests it, then removes the packaging.
Full truckload
For commercial builds and multi-pallet orders, a dedicated trailer keeps the full order together in one delivery. We confirm the unloading plan before the truck ships.
Size: 53" × 49" × 59" tall
Financing: From $174.37/mo or 0% APR with
Check your purchasing powerWhat Remanufactured Means
Every remanufactured machine is fully disassembled, deep cleaned, repaired or re-parted to factory spec, then tested under load before it ships. Backed by one year parts and labor, with extended coverage available.
Warranty Coverage
New and remanufactured equipment are both covered for one year, parts and labor, backed by us. Extended protection is available on either through BAG Care+. Used equipment is sold as-is with no warranty coverage, and is described honestly before you buy. We service nationwide - every ZIP code in the country - so coverage travels with the machine.
30-Day Returns & Exchanges
Change your mind within 30 days of delivery and you can return the machine or exchange it for a different size, color or configuration.
Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns and exchanges. Freight items must go back packaged to the same standard they arrived in — we will tell you exactly what that means before anything is collected.
Anything that arrives damaged or fails under warranty is handled separately and carries no restocking fee. Full terms are in our Returns, Exchange & Refund Policy.
Add before it ships
Before the freight bookingCoverage and accessories have to go on the same booking as the machine. Add them here and they travel together.
Extended warrantyRecommendedEvery machine includes 1 year parts and labor.
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Product details
Commercial-grade equipment, inspected and supported by warranty.
The Precor Discovery Series Leg Extension delivers selectorized quad isolation with gas-assisted seat adjustment, add-on weight micro-loading, 11-gauge fully welded steel, low-profile tower with translucent shrouds, and QR-coded instructional placards — 240 lb stack, 575 lb commercial frame, 53"×49" footprint. The leg extension is the primary machine for isolated quadriceps training — it loads the knee extension movement in isolation from the hip, concentrating the training stimulus on the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius without glute or hamstring contribution. Gas-assisted seat adjustment is the Discovery Series feature that determines whether the positioning adjustment users need to make before each set actually gets made: seat position on a leg extension sets the relationship between the knee joint's anatomical pivot and the machine's rotational axis. When these two pivots are not aligned, the machine produces shear force at the knee joint rather than rotational force at the quads. A fixed or awkward seat adjustment gets skipped; a pneumatic one-motion adjustment from the seated position gets used. The 240 lb stack is the same above-standard capacity as the Discovery Seated Row and Lat Pulldown — meaningful for quad isolation where the quads are one of the largest muscle groups in the body and advanced users regularly press the ceiling of lighter stacks. Add-on weight enables sub-increment progression between standard stack settings. QR placards and the open low-profile tower with translucent shrouds maintain the Discovery Series' accessible, user-friendly commercial aesthetic.
Low-profile tower and translucent shrouds for a clean, open gym appearance. 575 lb Precor Discovery commercial frame, 240 lb stack, 53"×49" footprint. Remanufactured.
Primary muscles targeted
Rectus Femoris Vastus Lateralis Vastus Medialis Vastus Intermedius
Secondary muscles
Tibialis Anterior
Key features
Gas-Assisted Seat — Pivot Alignment That Users Actually Set
Seat position aligns the knee joint's anatomical pivot with the machine's rotational axis — misalignment routes shear force to the knee rather than rotational force to the quads. Pneumatic one-motion adjustment from the seated position removes the friction that causes users to skip this critical setup step. Add-on weight enables sub-increment loading for precise progressive overload between standard stack settings.
240 lb Stack · 11-Gauge Frame · QR Placards · Open Tower
240 lb is above the commercial leg extension standard, providing headroom for advanced users on a movement that loads the largest muscle group in the lower body. 11-gauge fully welded steel frame for long-term commercial stability under heavy quad training. QR-coded instructional placards and low-profile translucent shroud tower for a welcoming, self-guided user experience across all experience levels.
Specifications
Dimensions (L × W × H)
53" × 49" × 59"
Machine Weight
575 lb
Weight Stack
240 lb + Add-On
Gas-assisted seat · QR placards · 11-gauge welded frame
Design
240+Add-On · Gas Seat · QR · 11-Gauge · 575 lb
240 lb stack · Add-on weight · Gas-assisted seat · QR instructional placards · Low-profile tower · Translucent shrouds · 11-gauge welded steel · 575 lb frame · 53"×49" footprint
1. Which selectorized lower-body machines are essential?
Leg extension, leg curl, and seated leg press are are top sellers and most common in gyms.
2. How do I adjust range of motion?
Most machines have adjustable backrests and pivot points; use numbered markers for consistency.
3. Do they require floor mounting?
Not required, but it never hurts; ensure a level surface and clear 3′ around the machine.
4. What financing options exist?
Same 0% APR financing available for all selectorized machines via Shop Pay.
5. Are replacement parts available?
Yes—Build A Gym stocks common cables, pulleys, and bushings for quick maintenance.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
The Precor Discovery Series Leg Extension delivers selectorized quad isolation with gas-assisted seat adjustment, add-on weight micro-loading, 11-gauge fully welded steel, low-profile tower with translucent shrouds, and QR-coded instructional placards — 240 lb stack, 575 lb commercial frame, 53"×49" footprint. The leg extension is the primary machine for isolated quadriceps training — it loads the knee extension movement in isolation from the hip, concentrating the training stimulus on the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius without glute or hamstring contribution. Gas-assisted seat adjustment is the Discovery Series feature that determines whether the positioning adjustment users need to make before each set actually gets made: seat position on a leg extension sets the relationship between the knee joint's anatomical pivot and the machine's rotational axis. When these two pivots are not aligned, the machine produces shear force at the knee joint rather than rotational force at the quads. A fixed or awkward seat adjustment gets skipped; a pneumatic one-motion adjustment from the seated position gets used. The 240 lb stack is the same above-standard capacity as the Discovery Seated Row and Lat Pulldown — meaningful for quad isolation where the quads are one of the largest muscle groups in the body and advanced users regularly press the ceiling of lighter stacks. Add-on weight enables sub-increment progression between standard stack settings. QR placards and the open low-profile tower with translucent shrouds maintain the Discovery Series' accessible, user-friendly commercial aesthetic.
Low-profile tower and translucent shrouds for a clean, open gym appearance. 575 lb Precor Discovery commercial frame, 240 lb stack, 53"×49" footprint. Remanufactured.
Primary muscles targeted
Rectus Femoris Vastus Lateralis Vastus Medialis Vastus Intermedius
Secondary muscles
Tibialis Anterior
Key features
Gas-Assisted Seat — Pivot Alignment That Users Actually Set
Seat position aligns the knee joint's anatomical pivot with the machine's rotational axis — misalignment routes shear force to the knee rather than rotational force to the quads. Pneumatic one-motion adjustment from the seated position removes the friction that causes users to skip this critical setup step. Add-on weight enables sub-increment loading for precise progressive overload between standard stack settings.
240 lb Stack · 11-Gauge Frame · QR Placards · Open Tower
240 lb is above the commercial leg extension standard, providing headroom for advanced users on a movement that loads the largest muscle group in the lower body. 11-gauge fully welded steel frame for long-term commercial stability under heavy quad training. QR-coded instructional placards and low-profile translucent shroud tower for a welcoming, self-guided user experience across all experience levels.
Specifications
Dimensions (L × W × H)
53" × 49" × 59"
Machine Weight
575 lb
Weight Stack
240 lb + Add-On
Gas-assisted seat · QR placards · 11-gauge welded frame
Design
240+Add-On · Gas Seat · QR · 11-Gauge · 575 lb
240 lb stack · Add-on weight · Gas-assisted seat · QR instructional placards · Low-profile tower · Translucent shrouds · 11-gauge welded steel · 575 lb frame · 53"×49" footprint
1. Which selectorized lower-body machines are essential?
Leg extension, leg curl, and seated leg press are are top sellers and most common in gyms.
2. How do I adjust range of motion?
Most machines have adjustable backrests and pivot points; use numbered markers for consistency.
3. Do they require floor mounting?
Not required, but it never hurts; ensure a level surface and clear 3′ around the machine.
4. What financing options exist?
Same 0% APR financing available for all selectorized machines via Shop Pay.
5. Are replacement parts available?
Yes—Build A Gym stocks common cables, pulleys, and bushings for quick maintenance.
30-Day Returns & Exchanges
Buy with confidence. Every Build A Gym order includes a 30-day window to return or exchange, whether you want a different size, color or configuration. Return shipping is the customer's responsibility and a 15% restocking fee applies to preference returns; warranty and damage claims carry no restocking fee. Full details in our Returns, Exchange & Refund Policy.
Save 5%
Complete the room
The machines our install crew puts in the same room as this one - priced as one shipment, delivered in one booking.
$2,445.00
This machine
Bundle total
- Items
- $4,697.28
- Bundle price
- $4,462.42
- Estimated bundle saving
- −$234.86
- Ships complete in
- 4–6 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.