326POWER BMW E63 Chakuriki Coilovers
326POWER Chakuriki coilovers were designed with one goal in mind: to provide the upmost levels of control and drivability while allowing you to lower your car into the floor.
Thanks to countless hours of R&D by legendary D1GP driver and 326POWER CEO Mitsuru Haruguchi, each Chakuriki coilover kit offers levels of customisation and personalisation far beyond those found on any other coilovers. Each component has been meticulously designed with low driving in mind, ensuring that your suspension can still function properly while your car is slammed.
Chakuriki Coilover Specs:
26-step damping adjustment using click adjusters
Monotube dampers, valved to suit your chosen spring rates Independent height adjustment and droop/preload settings (allows for full damper travel even at the lowest setting)
Camber adjustable top mounts (on kits for cars using MacPherson style suspension)
Robust 20mm-thick damper shafts Rubber dust boots
Hexagon-style locking collars with pinch bolt locking system
Eyelet-style bottom cups feature high-impact polyurethane bushes
Rubber spacers fitted to locking collars to prevent spring noise and stress on the spring under lateral loads
Each Chakuriki coilover kit can be built to suit your specific requirements via the 326POWER Upgrade Scheme. Please check over the upgrade options when ordering your coilovers.
STEP 1: Spring Rates – 4kg/mm ~ 100kg/mm
Choose your desired spring rates depending on the type of driving that you intend on doing. Your dampers will be valved according to the spring rates that you choose.
STEP 2 & 3: Colour Scheme - Blue, Black, Gold, Green, Orange, Purple, Red
Choose your desired colours for your Chakuriki coilovers and springs. In addition, you can choose any combination of the above colours for the coilover Click Adjusters, Top Mounts, Upper Bearing, Upper Locking Collar, Lower Locking Collar and Bottom Bracket. Please use the Additional Notes option when ordering if you want to mix and match colours.
STEP 4: Dust Boot Colour – Black, Blue, Green, Pink, Yellow
Choose the desired colour for the damper Dust Boots. The default colour is Black.
STEP 5: Mazibane Spring Upgrade
By default, Chakuriki coilovers are fitted with 326POWER’s Charabane springs. If you require a more progressive spring setup, you can upgrade to Mazibane springs. These are manufactured by Swift, who are widely regarded as makers of the finest coilover springs on the market.
STEP 6: Helper Spring Upgrade
If you plan on running a large amount of droop on your coilovers, you’ll want to have helper springs fitted. These ensure that the coilover spring isn’t unsupported when the damper is reaching its full extension, which is usually when weight is transferred away from a particular corner of the car (i.e when cornering hard or when jacking up the car). You can choose from the standard 326POWER Charabane helper springs or upgrade to the Swift Mazibane helper springs.
STEP 7: Damper Type
The most crucial component of any coilover is the damper unit. The damping settings can be adjusted to a small degree using click adjusters but, for some users, this isn’t enough. Chakuriki coilovers are available with one of three damper types. SS is the default damper and is the best option for street use. The SP damper is suitable for fast road use and some track driving, whereas the RS damper is designed for track use only. Each damper type has different piston and gas pressure settings to suit their intended use.
STEP 8: Camber Adjustable Top Mounts Upgrade (for cars with Double Wishbone suspension)
For cars that use MacPherson strut style front suspension, camber adjustable top mounts are included with Chakuriki coilover kits as standard. Kits for cars that use double wishbone front suspension setups are supplied with fixed top mounts but these can be upgraded to camber adjustable types if required.
STEP 9: Extra Camber Front Bottom Brackets Upgrade
On some European cars, it is notoriously difficult to increase the negative camber on the front wheels. This is very apparent when these cars are lowered and can sometimes result in the front wheels having positive camber (which does not look good!). To combat this problem, Extra Camber Front Bottom Brackets are available as an optional upgrade on kits for selected European models. These brackets are kinked to increase the negative camber on the front wheels. You can choose from the Low type (2-3deg of camber), Medium type (3-5deg of camber) or High type (5-7deg of camber).
STEP 10: 360 Saburoku Bearing Upgrade
On cars with MacPherson style front suspension, spring binding is a common issue when steering. This is because the coilover is trying to turn with your wheels while the other components remain captive, putting a lot of pressure on the standard top mount bearing. The 360 Saburoku Bearing sits between the spring and the lower locking collar and allows the spring to rotate freely, regardless of the coilover. If you want to make the process even smoother, you can choose to have 360 Saburoku Bearings at both the top and bottom of the spring.
STEP 11: Bump Stop Upgrade
If you want to limit your suspension’s travel for whatever reason (extreme wheel fitment, for example), you can choose to have bump stops fitted to your Chakuriki coilovers. Manufactured from polyurethane, each bump stop can withstand loads of up to 2500kg and will only compress by 7mm with 2000kg of force upon them.
All 326POWER Chakuriki coilovers are built to order and are only available upon request. If you don't find a kit specification that suits your exact requirements, please contact us for more information.
Please note: the coilovers pictured may feature upgrade parts that are not included as standard.