4130 - Nightshade – (Fixed Gear / Single-Speed)
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4130 - Nightshade – (Fixed Gear / Single-Speed)
6-Tone "Nightshade" Purple you won't find anywhere else!

The Nightshade Purple 4130 is a colorway you won't find anywhere else. The 4130 Core-Line now features LO-PRO wheels with an extra 2+ lbs weight savings OR the classic deep-v!
Customize your build

Advanced geometry, next-level design, and the flexibility to customize your bike from top to bottom have made our 4130 Steel (Fixed Gear / Single-Speed) line the most enduring choice for riders of all levels & styles. The quality is in the materials we select and components we trust.


  • FRAME:  Double Butted 4130 Grade Chromoly Steel
  • DROPOUTS: Die-Cast Dropouts Featuring Internal Chain-Tensioners
  • WHEEL SET:  Choose from our 'Lo-Pro' Wheels or 40mm Deep-V Style Wheels - Both w/ Sealed Bearing Hubs
  • FLIP-FLOP HUB:  Easily Ride Fixed Gear or Single Speed
  • GEAR RATIO:  46x16
  • HANDLEBARS:  4 Styles: Bullhorn, Drop, Riser & Pursuit
  • BRAKES:  Includes Front & Rear Brakes 
  • PEDALS:  Includes Alloy Pedals from Wellgo
  • SADDLE:  Includes Synthetic Leather Saddle w/ Steel Rails 

SIZE:  6 Frame Sizes to fit any Rider Height from 4'10" to 6'6" (Size 55cm Pictured)

WEIGHT:  20lbs 1oz w / Lo-Pro Wheels or 21lbs 12 oz w/ 40mm Deep-V Style Wheels 
*(Weights Taken Using a Size 55cm Frame w/ no Brakes or Pedals)


Risk-Free Purchase - State Bicycle Co. offers FREE EXCHANGES* -If this item doesn't work out, we'll send you a return label and exchange for free!

      Click Here for Size Chart and Specs

      RETURNS & Exchanges: State Bicycle Co. proudly offers FREE RETURNS for EXCHANGES - please see details of our Return Policy here.

      SHIPPING:  Most in-stock items ship within 1 business day! Tracking information is provided upon shipment. Learn more about our Shipping Policy

      ASSEMBLY: Complete Bicycles will ship 90% built and require only basic tools and knowledge to complete the build. However, a fully assembled bicycle also needs to be tuned and adjusted (oftentimes with specialty tools). We strongly encourage having your bike professionally assembled to validate your warranty and to ensure a safe and lasting ride.

      WARRANTY:  Warranty activated when you submit proof of professional assembly. 

      • 5-year Warranty on all bicycle frames
      • 1-year Warranty non-consumable parts
      • 2-year Warranty on Essor USA products

      Learn more about our Warranty Policy.

      Size Charts and Specs:  Detailed Size Charts and Specs can be found here:  Size Charts & Specs.

      SUPPORT:  We pride ourselves on having a friendly and knowledgeable staff. Contact us and we'd be happy to help you out in any way we can.

      Customer Reviews

      Based on 19 reviews
      4130 - nightshade

      Everything was straight and as advertised. I heavily suggest greasing everything and getting wheels trued before riding. Frame had some paint / finish flaws. Overall, the bike is awesome. Blast to ride and beautiful color.

      Sweet Bike.

      It's super fun to ride and looks great too. The wheels were out of true when they came but no other mechanical issues so far! I upgraded the seat and pedals for my liking, over all it's a solid bike. I'm 5'3 with a 29in inseam and got the 46cm, it's a pretty good fit. My bf's jealous of the slick sparkly purple.

      4130 - Nightshade - Deep V

      Bike feels great out of the box. Assembly was reasonably easy.

      Overall riding feel is stable and fun.
      Drivetrain is responsive and the stock ratio is fine for a little climbing as long as you are happy to hurt a little.
      Generally good value for money and great if you want a project bike to customize that rides nice out of the box.

      Small dent in the frame but not significant enough to go through the hassle of returning.
      the paint work is a little mediocre in general. Lets say It looks great from a distance or going by at 25 mph.
      I had to disassemble and properly grease all of the screws, hub bolts, lock-ring etc. Not a big deal just know this is an important step if you are assembling yourself.
      Bar tape... not sure why you are wrapped backwards.
      Chainring could be better (the teeth look a little rough but it still feels pretty good when you put down some power)

      Things I upgraded in the first 2 weeks / immediately
      Pedals = Odyssey Platforms with Hold Fast Straps
      Saddle = ISM PN 1.1
      Bartape = fi'zi:k tempo microtex

      I am super stoked on this bike especially after the upgrades I mentioned. It would have been 5 stars had it not been for the dent and the sloppy paint work.


      Nightshade – 4130 Core-Line

      Nightshade bike

      Crank is a little creaky but nevertheless good bike all around


      Solid bike. Looks great.

      Beautiful and fun

      Great bike, very fun to ride. Getting a lot of compliments esp from other fixie/SS cyclists. Looks amazing.

      Love this bike!

      I love it! My hope was to find a bike that is better suited for the hilly landscape that I traverse. This bike moves quickly and more effortlessly. The seat isn't terribly comfortable but would be easy to upgrade. I also love the beautiful purple color, and it sparkles in the sunlight!

      46 does not fit for someone 5'1 with 27 inseam (height based fit guide is problematic)

      Bought the bike based on raving reviews. However, I am 5'1 (27 inseam) and i can BARELY reach the ground stand over the top tube on tip toed (nowhere near the 2-3 inch clearance suggested by the merchant). It is very disappointing that I followed the guide, match all the criteria, even emailed a rep to confirm before purchasing, spent $70 on assembly, $20 bucks taxi to the bike shop, and now have to an additional $60 to disassemble & ship this thing back. For a company of this caliber, I would have think there would be more accountability on the part of the merchant to at least offer free return shipping. Rep was super nice (hence the 2 star)...unfortunately the company policy was not as helpful as I had hoped. Overall poor experience.

      My Single Speed Commuter

      The Nightshade has been a joy to ride on my daily commutes. Its steel frame glides over the rough patches and I'm impressed with the quality of the brakes and overall build.