---
product_id: 612974750
title: "Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories"
brand: "speedfil"
price: "S$121"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/612974750-between-the-arms-bta-bicycle-water-bottle-cage-stem-mount
store_origin: SG
region: Singapore
---

# non-slip secure strap wind-tunnel tested aero design 90.7g ultra-lightweight Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories

**Brand:** speedfil
**Price:** S$121
**Availability:** ✅ In Stock

## Summary

> 🚴‍♀️ Hydrate like a pro, race like a legend!

## Quick Answers

- **What is this?** Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories by speedfil
- **How much does it cost?** S$121 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/612974750-between-the-arms-bta-bicycle-water-bottle-cage-stem-mount)

## Best For

- speedfil enthusiasts

## Why This Product

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

## Key Features

- • **Race-Ready Lightweight:** At just 90.7g, this cage keeps your setup featherlight for peak performance.
- • **Aerodynamics That Cut Seconds:** Wind-tunnel tested to minimize drag and maximize your speed on every ride.
- • **Customizable Mounting Options:** Direct BTA mount with multiple ports and angles fits most aerobars—no extra hardware needed.
- • **Garmin-Compatible Integration:** Seamlessly pairs with Garmin Quarter Turn mounts to keep your data front and center.
- • **Secure Fit for High-Intensity Rides:** Non-slip strap locks your Speedfil A2 bottle in place, preventing rotation during sprints.

## Overview

The Speedfil Z4+ Bicycle Water Bottle Cage is a precision-engineered, ultra-lightweight hydration accessory designed specifically for Speedfil A2 bottles. Featuring wind-tunnel tested aerodynamics and a secure non-slip strap, it mounts directly to aerobars with versatile positioning options. Compatible with Garmin mounts, it’s built to enhance triathlon and cycling performance by combining speed, security, and seamless integration.

## Description

Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories

## Features

- HIGH PERFORMANCE HYDRATION ACCESSORIES – Speedfil hydration systems and accessories are designed to meet the demands of triathlon, Ironman & cycling competition. We continuously test and refine our products for both professional and amateur athletes. You can always expect the highest quality and performance from Speedfil.
- WIND-TUNNEL TESTED AERODYNAMICS – Our patented bicycle hydration systems & accessories are wind tunnel tested, to ensure they deliver the best in aerodynamics. We aim to help you and your bike go faster, and not hold you back.
- DESIGNED FOR SPEEDFIL A2 SYSTEM – The patent pending Speedfil Z4+ cage is specifically designed for use with Speedfil A2, and is the first cage optimised for BTA (Between-The-Arms) aero hydration. Includes a non-slip strap that locks your A2 in place and prevents the system from rotating. Also includes a uniquely designed tube clip to secure the drink tube to the side of the bottle for greater aerodynamics.
- EASY MOUNT DIRECT TO AEROBAR – Features numerous ports for a direct BTA mount into the aerobar extensions with 4 nylon cable ties. No additional mount or hardware is required. The ports are strategically placed allowing for multiple positions and variable angles, accommodating most aerobars. Also compatible with our stem mount kit, for mounting directly to the stem.
- GARMIN COMPATIBLE – The Speedfil Z4 is compatible with the Garmin Quarter Turn Bike Mount (Part# 010-11430-00, sold separately through Garmin resellers) for BTA configurations. This saves space within the aerobars and provides easy access to your data.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Speedfil |
| Brand | Speedfil |
| Model | Z4+ |
| Product Dimensions | 21.59 x 9.3 x 8.46 cm; 90.72 g |
| Item model number | SF-Z4A2-03 |
| Manufacturer part number | SF-Z4A2-03 |
| Item Weight | 90.7 g |

## Product Details

- **Colour:** Stem Mount
- **Material:** Nylon 66
- **Brand:** Speedfil
- **Product dimensions:** 7.9L x 9.1W x 15.5H centimetres
- **Manufacturer:** Speedfil

## Images

![Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories - Image 1](https://m.media-amazon.com/images/I/71ffB+M-10L.jpg)
![Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories - Image 2](https://m.media-amazon.com/images/I/71vbTXdkcIL.jpg)
![Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories - Image 3](https://m.media-amazon.com/images/I/81Ex5FftYnL.jpg)
![Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories - Image 4](https://m.media-amazon.com/images/I/61NGHZgWV2L.jpg)
![Between-The-Arms (BTA) Bicycle Water Bottle Cage (Stem Mount, 621ml/710ml Bottles) | Bike Mounting Hardware| Triathlon Cycling Accessories - Image 5](https://m.media-amazon.com/images/I/61XYo1aEOcL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Frequently Bought Together

- Speedfil Z4/Z4+ Between-The-Arms (BTA) Water Bottle Cage with Computer Mount.
- Speedfil A2 Bicycle Water Bottle, Between the Arms Hands-Free Hydration System with Refill Port
- Speedfil F1 Bicycle Water Bottle, Hands-Free Frame Mounted Hydration System with Refill Port

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**Shop now:** [https://www.desertcart.sg/products/612974750-between-the-arms-bta-bicycle-water-bottle-cage-stem-mount](https://www.desertcart.sg/products/612974750-between-the-arms-bta-bicycle-water-bottle-cage-stem-mount)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-10*