Shift Brace is one of Kamen Rider Drive's transformation devices. In this case, being the device that holds Drive's Shift Cars as a remote for his Drive Driver. Initally used by Protodrive, it was inherited for the completed Drive, first tested by Kiriko Shijima before Shinnosuke Tomari was recruited to become the new Drive.
On two separate instances, duplicate Shift Braces were manifested by Roidmude 027 and Gold Drive, who both copied Drive's data to become Imitation Drive and Gold Drive respectively. Gold Drive's version is fully-colored jet-black in comparison to the original. After the destruction of Gold Drive and the Sigma Circular, Drive's Shift Brace is the last of the Kamen Rider arsenal locked beneath the Drive Pit alongside Krim Steinbelt himself, with Shinnosuke handing it over to Krim's hologram personally. Who Will You Entrust the Future to, My Friend?. In a possible future, the Shift Brace is used by the future Drive, Eiji Tomari, before being taken along with the Drive Driver by the Paradox Roidmude who uses it to become Dark Drive.
Publication Information
- Device : Shift Brace
- Japanese : シフトブレス
- Usage : Transformation Devices
- Users : Kiriko Shijima, Shinnosuke Tomari
- Rider Users : Kiriko Shijima, Kamen Rider Drive
- Gender : Various
- HomeWorld : Earth (Main Timeline Continuity)
- Season : Kamen Rider Drive
- First Appeareance : Kamen Rider Drive Episod 47 : Who Will You Entrust the Future to, My Friend?
- Main View : Full Episod
Functionality
To transform, the user turns the Advanced Ignition key on the Drive Driver and rotates a Type Change Shift Car into its Lever Mode before inserting it forwardly into the Shift Brace via the Shift Landing Panel until the tip of the Shift Car hits the Chrome Guard Bumper . Once the Shift Car is set, the user must hold the car and lift it up and down back into the Shift Landing Panel to finish the transformation sequence into Kamen Rider Drive, right after the Drive Driver announces "Drive: Type" and the corresponding Type used. The only Shift Cars usable to Drive when he is not transformed are the ones that change his Type forms.
After transforming with a Type Change Shift Car, the user has the option to switch between different other Shift Cars. To do so, the user must turn the Advanced Ignition, pull the used Shift Car out, convert the new Shift Car to Lever Mode, insert it back into the Shift Brace, and repeat the same lifting action. This would change the base Shift Tire from the Type, or any previous Shift Tire used before, and cause the Drive Driver to announce "Tire Koukan" (タイヤ交換 Taiya Kōkan, lit. "Tire Exchange") and then the corresponding Shift Car used.
If the Shift Car that is being used is lifted at least once, the user will be given a power boost, while the Drive Driver says either the Type used if a Type Change Shift Car is currently in use (ex. "Type Formula" would be "Formula") or the last name of a Tire Exchange Shift Car (ex. "Hooking Wrecker" would be "Wrecker") or the number designation of a Pit Crew Shift Car (ex. "Formula 02" would be "02"). Depending on the amount of times it is lifted, the Drive Driver repeats itself that many times, up to three, while also initiating different functions.
To initiate a finishing attack, Drive must turn the Advanced Ignition and press the Igniter button on the Shift Brace, which makes the Drive Driver announce "Hissatsu" (必殺 lit. "Finisher") with a revving noise being looped. Lifting the Shift Car afterwards would then give Drive an exceeding amount of power, as well as cause the Drive Driver to announce "Full Throttle" and then the corresponding Shift Car used. Though in the case of Shift Dead Heat, which doesn't have a Lever Mode, the Drive Driver instead just announces "Dead Heat" when the Igniter is pressed. Drive may now release the power gained in any way he wishes, unless the Shift Car does not comply. This is shown when Shinnosuke couldn't utilize the Dream Vegas Shift Car's Full Throttle, as he didn't get a jackpot.
In order to have the Drive Driver cancel the transformation, Drive must remove the Shift Car currently placed in the Shift Brace and press the Igniter. Sometimes, after a victorious battle, the Drive Driver would say "Nice Drive" as a compliment to the user's great job. While Drive is in civilian form, the Shift Brace can either act as a navigator or receive messages. At the same time, the Shift Brace is able to have a physical examination for its user. It can also somehow act as a watch for Drive.
When Gold Drive is in possession of the Banno Driver, the Shift Brace is not a part of the transformation. Instead, it appears once he fully transforms into Gold Drive and only allows him to channel either his own power or the exploited weapon he hijacks. Once Banno steals a Shift Car or Signal Bike, he can load them into his Shift Brace and press the Igniter, allowing him to exploit their powers through either his combat techniques or one of his hijacked weapons. In one instance, he uses the stolen Signal Tomarle to activate the hijacked Zenrin Shooter's Full Throttle attack.
Core Driviars

Core Driviars were devices developed by Krim Steinbelt, converted to act as the source of power for the Shift Cars, Tridoron, and later the Roidmudes. These allowed them to create or counter the Heavy Acceleration. He allowed his colleague Dr. Banno to use them in the creation of the Roidmudes, which in the end participated in their revolution. What Is in the Belt's Past? Apparently, after Krim heard a ruckus on Banno's lab, and finds out his colleague's project is much more lethal on using a human sacrifice for his experiment, causing their partnerships broke apart, Banno stole one of Krim's equipments.
As Krim theorizes, if four Core Driviars belonging to four Super Evolved Roidmudes ignited, the Global Freeze can be ignited, covering the Earth with Heavy Acceleration waves. After the battle against Gold Drive (Banno) and Sigma Circular ended, Krim gathered all of Core Driviar-based arsenals he had so far, as well as the Tridoron, Ride Chaser and Ride Macher and locked them alongside himself beneath Tridoron's parking space at the Drive Pit to ensure that no Core Driviars would be fallen to the wrong hands again.
Models Of Core Driviars
- Core Driviar-N : The finalised version of the standard Core Driviar, this one used to empower Kamen Rider Drive's Rider System. After Drive gains access to Type Formula, his Core Driviar-N appeared to have taken the form of a car's engine minus the pistons once his Formula One nose-like breastplate is removed. During any tune-up by the Pit Crew, Sparner also directly tunes this Core Driviar.
- Core Driviar-0 : The prototype of the Core Driviars, these were the ones Krim gave to Banno when he was forced to help him in the development of Roidmudes. Kamen Rider Protodrive's suit is also empowered by this type, prior to his reprogramming into Mashin Chaser. Mashin Chaser also has this Core Driviar installed into his suit
- NEX-Core Driviars : As part of a plan to have the Next System replace the Drive System in fighting the Roidmudes, Mach and his Rider System is armed with stronger versions of the Core Driviars.
- Core Driviar-TH : Drive's Trailer-Hou, which is accessed through Shift Formula, is a sentient weapon powered by a specialized Core Driviar called the Core Driviar-TH.
- Core Driviar-ONE : In order to fit with Proto-Zero's ability to induce Super Heavy Acceleration, Rinna created the Core Driviar-ONE to empower Kamen Rider Chaser's suit with said ability.
- Core Driviar-T : The power source of Tridoron.
- Core Driviar-B : The power source for the Ride Booster Set