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  2. sku: 15412287941029761
  3. SIMPLEX LJ1000

SIMPLEX LJ1000 Cage Road Bicycle Bolt Rear Derailleur 5/6

Lj1000 Simplex Short Cage 5/6 Speed Road Bicycle Bolt-on Rear Derailleur

( Brand: Simplex ), ( Manufacturer Part Number: LJ1000 ), ( Part Type: Bicycle Derailleur Short ), ( Color: Silver ), ( Compatible Bike Type: City Bike, Hardtail Bike, Hybrid Bike, Racing Bike, Road Bike, Touring Bike ), ( Set Includes: Derailleur ), ( Mounting Type: Bolt-on ), ( Number Of Speeds: 6 Speed ), ( Country Of Origin: France ), ( Derailleur Cage Length: Short Cage )

Review SIMPLEX Short Cage 5/6 Speed Road Bicycle Bolt on Rear Derailleur

The Simplex LJ1000 Cage 5/6 Road Bicycle Bolt-On Rear Derailleur is a testament to the harmony of function and aesthetics, designed to elevate your cycling experience on the open road. This derailleur, a masterpiece from Simplex, is a reliable workhorse that delivers smooth and precise gear shifts, ensuring a seamless transition between your gears.

Crafted with a robust construction, the LJ1000 boasts a durable aluminum body that withstands the rigors of daily use. The bolt-on design allows for easy installation on your bicycle frame, providing a secure fit that maintains its alignment for optimal performance. The derailleur cage, designed to accommodate 5/6 speed cassettes, offers a wide range of gearing options, catering to both flat and hilly terrains.

The Simplex LJ1000 is adorned with finely-tuned springs and adjustable limit screws, enabling you to fine-tune the derailleur to your specific needs. The adjustable B-tension and cage angle offer further customization, ensuring the perfect alignment with your chain and cassette for precise and efficient shifting.

With its sleek and timeless design, the Simplex LJ1000 derailleur is more than just a functional component. It's a statement piece that complements your bicycle, adding a touch of classic elegance to your ride. Whether you're a seasoned cyclist or a novice looking to upgrade your gear, the Simplex LJ1000 Cage 5/6 Road Bicycle Bolt-On Rear Derailleur is an investment in performance and style that you won't regret.

The Simplex LJ1000 cage 5/6 road bicycle bolt-on rear derailleur is a classic component with a rich history in cycling. Here are some pros and cons to consider:

Pros:

1. Heritage: Simplex has been a trusted name in the cycling industry for over eight decades. The LJ1000 is a testament to the company's commitment to quality and performance.

2. Compatibility: This derailleur is designed for 5/6-speed freewheels, making it suitable for a broad range of vintage and retro bikes.

3. Durability: Made of high-quality materials, the LJ1000 is known for its durability and reliability, even under heavy use.

4. Adjustability: The derailleur offers fine-tuning options, allowing cyclists to achieve precise gear shifts.

Cons:

1. Limited Speed: With only 5/6 speeds, the LJ1000 may not be suitable for modern bikes that utilize more gears.

2. Compatibility Issues: Due to its vintage design, finding compatible shifters and other components might be challenging.

3. Learning Curve: Although the derailleur is adjustable, it may require some patience and expertise to get it dialed in perfectly.

4. Weight: Compared to modern derailleurs, the LJ1000 is heavier, which could affect the overall speed and performance of the bike.

In conclusion, the Simplex LJ1000 cage 5/6 road bicycle bolt-on rear derailleur is an excellent choice for cyclists who value the charm and character of vintage components. However, if you prioritize modern features such as a wider gear range, lighter weight, or ease of use, a more contemporary derailleur might be a better fit. Ultimately, the decision depends on your personal preferences and the specific needs of your bicycle.

Details:

CONTACT: We answer questions ASAP. SIMPLEX LJ1000 SHORT CAGE 5/6 SPEED ROAD BICYCLE BOLT-ON REAR DERAILLEUR, Simplex LJ 1000 rear derailleur, composite and alloy short cage with vinyl pulleys. Please leave us a positive rating. DOMESTIC: Domestic packages are shipped USPS with Delivery Confirmation.

Marked Brevet.G.D.G Made in France. Large oversize packages are usually shipped UPS ground.

part #: lj1000 prices

  • $30.00-$55.00

specifications ribicycl:

  • brand: Simplex
  • mpn: Lj1000
  • part type: Bicycle Derailleur Short
  • color: Silver
  • compatible bike type: City Bike, Hardtail Bike, Hybrid Bike, Racing Bike, Road Bike, Touring Bike
  • set includes: Derailleur
  • mounting type: Bolt-on
  • number of speeds: 6 Speed
  • country of origin: France
  • derailleur cage length: Short Cage

seller ribicycl:

  • # reviews: 18640
  • city: Westcliffe, Colorado
  • rating: 99.7%

shipping ribicycl:

  • class: Standard
  • cost: $10.65
  • carrier: USPS
  • transit: 3-7 Days
  • type: Calculated
  • service: USPS Ground Advantage

returns ribicycl:

  • method: Money back
  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days

payments ribicycl:

  • credit card: Discover
  • wallet: Apple-pay
  • other

offer ribicycl:

  • availability: In Stock
  • started: November 11, 2025
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • best offers: True

general ribicycl:

  • Cycling > Bicycle Components Parts > Rear Derailleurs
  • condition: Used
part type: bicycle derailleur short, compatible bike type: city bike, hardtail bike, hybrid bike, racing bike, road bike, touring bike, set includes: derailleur, mounting type: bolt-on, number of speeds: 6 speed, country of origin: france, derailleur cage length: short cage,
category: sporting goods > cycling > bicycle components parts > rear derailleurs, color: silver, sku: 15412287941029761,
Simplex LJ1000 Is Similar To:
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5 offers $30.00–$55.00 USD
  • Used. Offer #1 priced at $54.00 + $10.95 shipping estimate = $64.95* total. Marked Brevete S.G.D.G Made in France. Simplex LJ 1000 rear derailleur, composite and alloy short cage with vinyl pulleys.+$10.95 shipping
  • Offer #2 priced at $55.00 + $9.00 shipping estimate = $64.00* total. +$9.00 shipping
  • Offer #3 priced at $30.00 + $30.00 shipping estimate = $60.00* total. +$30.00 shipping
  • Used. Offer #4 priced at $400.00 + $195.00 shipping estimate = $595.00* total. This bike is perfectly suited for those around 5ft tall and was custom ordered from The Big Wheel in east Denver in 1982. The benefit is you'll have the benefit of rolling further with less effort than a geared down 24" bike or even a more modern ladies bike with 650C.+$195.00 shipping
  • New other (see details). Offer #5 priced at $229.99 + $15.00 shipping estimate = $244.99* total. Model LJ (Lucien Juy) 1000 NOS. Double spring articulated design.+$15.00 shipping

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