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Items weighing 149 lb or less ship by ground parcel rather than freight.
Receive by Sep 28
Remanufactured
Precor C Line Leg Extension
$2,095.00
Save 44%
New retail $3,760 —
you save $1,665 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: Sep 28
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 C-Line Leg Extension delivers selectorized quad isolation with an adjustable start position, precision pivot point, ergonomic seat and rollers, integrated weight stack, and commercial-grade C-Line construction — 575 lb commercial frame, 53"×49" footprint. The leg extension is the primary machine for isolated quadriceps training — it trains the knee extension movement in isolation from the hip, which means the glutes and hamstrings that assist with squatting and pressing movements do not contribute. This makes the leg extension the machine that produces the most concentrated quad stimulus available on a selectorized floor. The adjustable start position is the specification that distinguishes a well-engineered leg extension from a basic one: the start position determines where in the range of motion the knee joint begins the extension. A fixed start position forces every user to begin from the same knee angle regardless of limb length, flexibility, or injury history — users with tight hip flexors or limited knee flexion range cannot reach the standard start position without compensatory torso lean. Adjustable start position sets the roller contact to the user's comfortable starting angle, which means the productive extension range begins from where the user's anatomy allows rather than where the machine is fixed. The precision pivot point aligns the machine's rotational axis with the knee joint's anatomical axis — misalignment between the machine pivot and the knee pivot produces shear forces that load the patellar tendon rather than the quadriceps, which is the mechanism responsible for leg extension machines with a reputation for knee discomfort.
Ergonomically designed seat and rollers for user comfort across all resistance settings. 575 lb Precor C-Line commercial frame, 53"×49" footprint. Contact us for stack specifications. Remanufactured.
Primary muscles targeted
Rectus Femoris Vastus Lateralis Vastus Medialis Vastus Intermedius
Secondary muscles
Tibialis Anterior
Key features
Adjustable Start Position — Extension Range Begins Where Anatomy Allows
Adjustable start position sets roller contact to the user's comfortable starting knee angle rather than a fixed machine default. Users with limited knee flexion or tight hip flexors cannot reach a fixed start position without compensatory torso lean that shifts load off the quads. Adjustable start ensures the productive extension range begins from the user's accessible angle, covering the full population from rehabilitation through advanced training.
Precision Pivot Point · Ergonomic Rollers · 575 lb C-Line Frame
Precision pivot aligns the machine's rotational axis with the knee joint's anatomical axis — misalignment between machine pivot and knee pivot produces patellar tendon shear rather than quad loading, which is the root cause of leg extension machines with a reputation for knee discomfort. Ergonomic rollers distribute contact force across the shin for comfort under load. 575 lb commercial C-Line frame for long-term stability under continuous quad training.
Specifications
Dimensions (L × W × H)
53" × 49" × 59"
Machine Weight
575 lb
Weight Stack
Contact Us
Adj. start position · Precision pivot · Ergonomic rollers
Design
Adj. Start · Precision Pivot · C-Line · 575 lb
Adjustable start position · Precision pivot point · Ergonomic seat & rollers · Integrated weight stack · Commercial C-Line frame · 575 lb · 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 C-Line Leg Extension delivers selectorized quad isolation with an adjustable start position, precision pivot point, ergonomic seat and rollers, integrated weight stack, and commercial-grade C-Line construction — 575 lb commercial frame, 53"×49" footprint. The leg extension is the primary machine for isolated quadriceps training — it trains the knee extension movement in isolation from the hip, which means the glutes and hamstrings that assist with squatting and pressing movements do not contribute. This makes the leg extension the machine that produces the most concentrated quad stimulus available on a selectorized floor. The adjustable start position is the specification that distinguishes a well-engineered leg extension from a basic one: the start position determines where in the range of motion the knee joint begins the extension. A fixed start position forces every user to begin from the same knee angle regardless of limb length, flexibility, or injury history — users with tight hip flexors or limited knee flexion range cannot reach the standard start position without compensatory torso lean. Adjustable start position sets the roller contact to the user's comfortable starting angle, which means the productive extension range begins from where the user's anatomy allows rather than where the machine is fixed. The precision pivot point aligns the machine's rotational axis with the knee joint's anatomical axis — misalignment between the machine pivot and the knee pivot produces shear forces that load the patellar tendon rather than the quadriceps, which is the mechanism responsible for leg extension machines with a reputation for knee discomfort.
Ergonomically designed seat and rollers for user comfort across all resistance settings. 575 lb Precor C-Line commercial frame, 53"×49" footprint. Contact us for stack specifications. Remanufactured.
Primary muscles targeted
Rectus Femoris Vastus Lateralis Vastus Medialis Vastus Intermedius
Secondary muscles
Tibialis Anterior
Key features
Adjustable Start Position — Extension Range Begins Where Anatomy Allows
Adjustable start position sets roller contact to the user's comfortable starting knee angle rather than a fixed machine default. Users with limited knee flexion or tight hip flexors cannot reach a fixed start position without compensatory torso lean that shifts load off the quads. Adjustable start ensures the productive extension range begins from the user's accessible angle, covering the full population from rehabilitation through advanced training.
Precision Pivot Point · Ergonomic Rollers · 575 lb C-Line Frame
Precision pivot aligns the machine's rotational axis with the knee joint's anatomical axis — misalignment between machine pivot and knee pivot produces patellar tendon shear rather than quad loading, which is the root cause of leg extension machines with a reputation for knee discomfort. Ergonomic rollers distribute contact force across the shin for comfort under load. 575 lb commercial C-Line frame for long-term stability under continuous quad training.
Specifications
Dimensions (L × W × H)
53" × 49" × 59"
Machine Weight
575 lb
Weight Stack
Contact Us
Adj. start position · Precision pivot · Ergonomic rollers
Design
Adj. Start · Precision Pivot · C-Line · 575 lb
Adjustable start position · Precision pivot point · Ergonomic seat & rollers · Integrated weight stack · Commercial C-Line frame · 575 lb · 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.
$2,095.00
This machine
Bundle total
- Items
- $4,347.28
- Bundle price
- $4,129.92
- Estimated bundle saving
- −$217.36
- Ships complete in
- 6–8 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.