Firmstrong Siren Lady Single Speed - Women's Beach Cruiser Bike

$ 419.00


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The Siren bike is the ideal beach cruiser bike for tall women, with it’s extended length, step-through frame and forward pedaling. Although the Siren has short seat tube at only 17”, the added length and the 4” forward pedaling design makes this an ideal ride for women 5’4” – 6’4”. However, it is also an exceptionally comfortable cruiser for riders who don’t fall in that height range because of the forward pedaling setup.

The frame design of the Siren Lady is clean and sleek, with a touch of the classic elements mixed with newer designed elements. The curve of the top is high arches but dips low, making it an easy bike to get on and off of. The length in the frame is the most noticeable element, while it still resembles the standard riding position design, it differs slightly because of how pedals are shifted 4” in front of the riders hips. Generally, the pedals sit directly below the riders hips, requiring the rider to push directly downward to pedal. In the case of the Siren Lady, the pedals are moved forward, so the rider will push slightly down and slightly forward on the pedals to get the bike moving. This does a few things, firstly it creates added leg room for riders with longer legs because without having to raise their seat they will get 4” additional inches of leg extension. Secondly, it creates a more laid back riding position, the rider can still have a straight back but they have their feet kicked forward a little making the position a little more relaxed taking some of pressure off the hips of the rider. Also, because the pedals are moved forward ridings can keep the seat lower, thus stay lower to the ground while still getting good leg extension, this provides some riders a great sense of stability.

While different than a standard cruiser frame, the Siren is a very comfortable bike especially suitable for taller women. This is a big, long cruiser great for the women who want something they can get comfortable on but also look feminine cruising around on.


  • Frame: Firmstrong Elongated, step-through frame; Forward pedaling design; Steel
  • Frame Size: 17"
  • Fork: Rigid Fork Steel
  • Wheels: Alloy Rim 26"×1.75"×14G×36H
  • Tires: 26" ×2.125" Black Tire with White Wall
  • Hub: Steel 36H, Rear KT Coaster
  • Spokes:14G Stainless Steel
  • Crankset: Forged One Piece Crank, 40T Chainwheel
  • Chain: KMC
  • Bottom Bracket: OPC Type
  • Pedals: Resin Block
  • Brake: KT Coaster Brake 
  • Handlebar: Steel 680mm wide 
  • Stem: Alloy φ25.4mm E:100mm
  • Grips: Synthetic Leather
  • Saddle: Classic Padded Dual Spring Saddle
  • Seat Post: Steel 25.4mm x 300mm
  • Seat Clamp: Alloy
  • Kickstand: Steel
  • Fender: Steel
  • Weight of the Bike: 36.5 lbs
  • Recommended Rider Height: Fits riders 5'4"- 6'4” Tall




Customer Reviews

Based on 4 reviews
Excellent service

Hello - just wanted to thank you for the excellent service and for the sweet ride. I will use your company in the future.

A perfect bike for me

The Siren bike goes with a leisure frame design good for taller ladies. I picked the baby blue one. When I opened the box, I was surprised that it looks so prestige. The blue color is very feminine. The frame design is nice looking and easy for a lady to ride on it. The assembly was within 1 hour. Then I rode the bike in our small town. Very convenient! I like it and would like to recommend to my friends.

Good bike

This bike is very good looking and comfortable to ride. I take the vanilla color. When I drove around in our neighborhood, people all praised it a nice bike, and I felt very comfortable to handle it. Lastly, I need to state that has an excellent customer service. Whenever I emailed them for some enquiries, they responded very quickly. Fantastic! I like this bike, and I would like to recommend this company to other people too.

Christy G
Comfortable ride for my tall frame

Let me start by saying I love this bike! I bought the Mint Green and it is a beautiful pearlized color. It shipped and was delivered in under 5 days! It was easy to put together and easy to make adjustments as needed. This bike delivers for taller women! I'm 5' 11, most of my height is in my legs and I have always had issues with bikes that didn't give my legs the reach they needed for good extension. The adjustable seat and handle bars made it easy to find the perfect fit right out of the box. The seat is wide and very comfortable, heavy duty springs give the seat a lot of support. I love the low bar design that makes it easy to step into the bike. No need to throw your leg over the seat. It's easy to peddle and get this bike moving. The fenders give it a classic look. The big tires and matching rims are sweet and back peddling stops the bike easily. If you're looking for a single speed beach cruiser, this bike is for you.