Parcel ground shipping
Items weighing 149 lb or less ship by ground parcel rather than freight.
Receive by Sep 21
New
BUILT Strength Fractal Series Leg Extension / Leg Curl
$3,795.00
In Stock
Parts & Labor, Plus Lifetime Frame
New equipment. Coverage starts on the date of delivery.
Shipping calculator
Enter your state and ZIP code to see delivery options and prices.
Machine overview
Condition: New
Warranty: 1 Year Parts & Labor (Extended Available)
Returns: 30-Day Returns & Exchanges
Shipping: Driveway Delivery, or Inside Delivery & Assembly
Receive by: Sep 21
How It Ships: Crated w/ Assembly Manual
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: 61" × 40" × 58" tall
Financing: From $174.37/mo or 0% APR with
Check your purchasing powerWhat New Means
Brand new, current-model equipment shipped in the factory crate with the full manufacturer warranty. Extended coverage is available at checkout.
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.
Pairs well with this
Nothing selected yet
Added as separate lines on your order.
Product details
Commercial-grade equipment, inspected and supported by warranty.
The BUILT Strength Fractal Series Leg Extension / Leg Curl combines seated quad isolation and hamstring development in a single 300 lb selectorized station — with a quick-switch mechanism that transitions between leg extensions and leg curls without changing the weight stack setting. Unilateral or bilateral training is available on both exercises, enabling single-leg work for addressing strength imbalances alongside standard bilateral loading.
Seat, backrest, and leg rollers all adjust independently to position any user correctly for both exercises before the first rep — 691 lb of commercial-grade construction keeps the machine planted and stable under maximum loading in both positions. New.
Leg extension — primary muscles
Quadriceps Rectus Femoris
Leg curl — primary muscles
Biceps Femoris Semitendinosus Semimembranosus
Secondary muscles
Gastrocnemius Glutes Hip Flexors
Key features
Quick-Switch Mode Transition
A quick-switch mechanism converts the machine between leg extension and leg curl without changing the weight stack — seamless transitions that keep training intensity high between exercises without lengthy reconfiguration.
Unilateral & Bilateral Training
Both leg extension and leg curl can be performed unilaterally or bilaterally — single-leg work addresses strength imbalances and adds training variety, while bilateral loading supports standard progressive strength development.
Adjustable Seat, Backrest & Leg Rollers
Three independent adjustment points — seat, backrest, and leg rollers — position any user correctly for both exercises, maintaining proper hip angle and leg alignment for controlled, targeted muscle loading on every rep.
300 lb Stack · 691 lb Commercial Frame
A 300 lb selectorized stack covers the full training range for both exercises, and a 691 lb commercial-grade frame delivers the structural mass needed for stable, consistent performance under maximum loading in both positions.
Specifications
Dimensions (L × W × H)
61" × 40" × 58"
Machine Weight
691 lb
Weight Stack
300 lb
Pin-select selectorized
Condition
New
Fractal Series · BUILT Strength
Functions & Adjustability
Leg Extension · Leg Curl · Unilateral
Quick-switch mechanism · Adjustable seat, backrest & leg rollers · Bilateral & unilateral · 300 lb stack
Frame
11-Gauge (3mm) Steel
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 BUILT Strength Fractal Series Leg Extension / Leg Curl combines seated quad isolation and hamstring development in a single 300 lb selectorized station — with a quick-switch mechanism that transitions between leg extensions and leg curls without changing the weight stack setting. Unilateral or bilateral training is available on both exercises, enabling single-leg work for addressing strength imbalances alongside standard bilateral loading.
Seat, backrest, and leg rollers all adjust independently to position any user correctly for both exercises before the first rep — 691 lb of commercial-grade construction keeps the machine planted and stable under maximum loading in both positions. New.
Leg extension — primary muscles
Quadriceps Rectus Femoris
Leg curl — primary muscles
Biceps Femoris Semitendinosus Semimembranosus
Secondary muscles
Gastrocnemius Glutes Hip Flexors
Key features
Quick-Switch Mode Transition
A quick-switch mechanism converts the machine between leg extension and leg curl without changing the weight stack — seamless transitions that keep training intensity high between exercises without lengthy reconfiguration.
Unilateral & Bilateral Training
Both leg extension and leg curl can be performed unilaterally or bilaterally — single-leg work addresses strength imbalances and adds training variety, while bilateral loading supports standard progressive strength development.
Adjustable Seat, Backrest & Leg Rollers
Three independent adjustment points — seat, backrest, and leg rollers — position any user correctly for both exercises, maintaining proper hip angle and leg alignment for controlled, targeted muscle loading on every rep.
300 lb Stack · 691 lb Commercial Frame
A 300 lb selectorized stack covers the full training range for both exercises, and a 691 lb commercial-grade frame delivers the structural mass needed for stable, consistent performance under maximum loading in both positions.
Specifications
Dimensions (L × W × H)
61" × 40" × 58"
Machine Weight
691 lb
Weight Stack
300 lb
Pin-select selectorized
Condition
New
Fractal Series · BUILT Strength
Functions & Adjustability
Leg Extension · Leg Curl · Unilateral
Quick-switch mechanism · Adjustable seat, backrest & leg rollers · Bilateral & unilateral · 300 lb stack
Frame
11-Gauge (3mm) Steel
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.
$3,795.00
This machine
Bundle total
- Items
- $4,329.64
- Bundle price
- $4,113.16
- Estimated bundle saving
- −$216.48
- Ships complete in
- 4–6 weeks
One freight booking, one delivery window, one crew. Inside Delivery & Assembly available on the whole bundle.