---
product_id: 57313259
title: "Radio Bikes Siren BMX Frame | Black | with (Screwable) | 20.5 Inches"
brand: "radio bikes"
price: "FREE"
currency: VND
in_stock: false
url: https://www.desertcart.vn/products/57313259-radio-bikes-siren-bmx-frame-black-with-screwable-20-5
store_origin: VN
region: Vietnam
---

# Radio Bikes Siren BMX Frame | Black | with (Screwable) | 20.5 Inches

**Brand:** radio bikes
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Radio Bikes Siren BMX Frame | Black | with (Screwable) | 20.5 Inches by radio bikes
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/57313259-radio-bikes-siren-bmx-frame-black-with-screwable-20-5)

## Best For

- radio bikes enthusiasts

## Why This Product

- Trusted radio bikes brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Wheel size: 20 inches. Material: 100% 4130 CrMo, upper tube and lower tube cast sets, integrated headset, integrated seat clamp, screw-on brake equipment, Mid BB Geometry: Top tube (TT): 20.5 or 21 inches (as option). Chain stay (CS): 13.2 inches. Head tube angle (HA): 75°. Seat tube angle (SA): 71°. Bottom bracket height: 11.6 inches. Frame height (SO): 8.3 inches. Seat clamp: integrated. Seat post diameter: 25.4 mm. Bottom bracket: Mid BB Drop: 6 mm thick, 14 mm axle mount, CND 'd and hardened. Chain tensioner: none. Brake socket: screwable, M8, included. Model year: 2016.

## Features

- Wheel size: 20 inches
- Material: 100% 4130 CrMo, upper tube and lower tube cast sets, integrated headset, integrated seat clamp, screw-on brake equipment, Mid BB
- Geometry:
- Top tube (TT): 20.5 or 21 inches (as option)

## Images

![Radio Bikes Siren BMX Frame | Black | with (Screwable) | 20.5 Inches - Image 1](https://images-na.ssl-images-amazon.com/images/I/61JXTnOXlnL.jpg)

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**Shop now:** [https://www.desertcart.vn/products/57313259-radio-bikes-siren-bmx-frame-black-with-screwable-20-5](https://www.desertcart.vn/products/57313259-radio-bikes-siren-bmx-frame-black-with-screwable-20-5)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-24*