# Helmz

Helmz (stylized as HELMS) is a sports bicycle from Bridgestone Cycle Co., Ltd. jointly developed with fashion brand narifuri.

## Overview

Bridgestone Cycle's 60th-anniversary model was developed as a "bicycle to be a part of fashion" with narifuri taking charge in frame design and concept establishment. It was created with a "focus on design." The model was announced in 2009 and was sold starting in 2010.
The name HELMZ is derived from the English term "helm."
Custom-designed original parts were made for HELMZ by Japanese cycle part brands such as NITTO, MKS Pedal, and Sugino. Japanese-oriented brand parts were selected carefully to minimize the use of Shimano parts.
These original parts of HELMZ are sold as aftermarket cycle products. The entire sales plan, including the package design of selling boxes and POP, was awarded the Minister of Economy Award and the Planning Award at the 42nd JPM Creative Design Show in 2012. SR1 received the Good Design award in 2014.

## Technical features
### Air pressure formed aluminum frame

The frame was based on a sloped, low-front, top tube design from Narifuri and was manufactured using superplastic forming which molds the frame by inflating high air pressure in the 7005 aluminum pipe. Bridgestone cycle usually used this manufacturing method to improve riding performance, but in HELMZ it was necessary to realize the design.

### Wheels

The texture and rim height differ in front and rear wheels. The front wheel is silver with 35mm rim height. The rear wheel is black with 38 mm rim height. Models with high-performance sports wheels were launched afterward.

### Thumb shifter

For models with gear shifts, a thumb shifter is used. This shifter is operated with the thumb, unlike the typical modern sports bicycle push bar mechanical shift.

### Original aftermarket parts

Helmz's original aftermarket parts were released in 2012. Stem, handlebar, saddle, wheels, gear cranks, and most other original parts were sold on the market as aftermarket parts.

### Belt drive

The belt drive equipped models, SR1 and S10, were introduced in 2013. These models were an update of Bridgestone's belt drive experience from 1980, "SSSD" (Selectable SS Solld Drive). The new belt drives were made out of carbon instead of kevlar making the belts lighter and more flexible.

## Models

Frame shape and concepts have not been changed since its first announcement except for the new sizes being set.
| Model Name | Model Year | Composition |
| H1 | 2010 - 2011 | 9 speed, flat bar handle |
| H1X | 2011 - 2013 | 10 speed, bull-horn handle, original design parts, high-quality cyclocross wheels |
| H10 | 2011 - | 9 speed, flat handle, size 510mm added |
| H65 | 2012 - | 9 speed, size 650B wheels, flat handle, size 480mm (compact model) |
| SR1 | 2013 - | SSSD (Single Speed Solid Drive), high-quality cyclocross wheels, drop handle |
| S10 | 2013 - | SSSD (Single Speed Solid Drive), riser bar handle |
| H2X | 2014 - | 10 speed, bull-horn handle, original design parts, high-quality cyclocross wheels |

## Collaboration
### Star Wars

Collaborating with Star Wars, Helmz released two 5th anniversary models in different colors. The Galactic Empire model is black-based with blue, while the Rebel Alliance model is silver based with red. The bikes were hand-painted at the Bridgestone Cycle headquarters factory.

## Awards

2013 Planning: JPM Minister of Economy Award in 42nd JPM Creative Design Show for Year 2012
2014 SR1: Good Design award 2014
2016 SR1: Selected as "JAPANESE DESIGN TODAY 100" in Singapore