The JB/KYB φ38 Special Front Fork was developed for the air-cooled ’70s to ’80’s superbikes and other literbikes. Its high rigidity obtained though a high-strength ultra-thin inner tube and the excellent spring and damping characteristics that are based on BITO R&D’s extensive proprietary knowledge make it an ideal suspension for street use. The separately available extension kit allows making height adjustments that are essential for race users or custom bikes.
Colors/Coat
Specs
Two different base lengths and the separately available JB-POWER extension kits allow making height adjustments that are essential for race users or custom bikes.
Short
- Total Length：750mm
- Stroke：130mm
- Caliper Mount Pitch：72mm
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：250cc
- Oil Level：136mm
Short +
- Total Length：774mm
- Stroke：130mm
- Caliper Mount Pitch：72mm
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：250cc
- Oil Level：136mm
Normal
- Total Length：805mm
- Stroke：130mm
- Caliper Mount Pitch：72mm
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：285cc
- Oil Level：125mm
Normal +
- Total Length：829mm
- Stroke：130mm
- Caliper Mount Pitch：72mm
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：285cc
- Oil Level：125mm
JB/KYB 41Ø Front Fork
The JB/KYB φ41 Special Front Fork has a 12-step adjustment for rebound and compression damping and a preload adjuster. The BITO R&D special tuned cartridge-type damper unit realizes a supple and elastic suspension setting. A separately available extension kit allows chassis height adjustments. It can be installed on the GPZ900R (A7 – A11) without modification.
(* The top of the genuine separate handle needs to be machined to install the JB/KYB φ41 Special Front Fork)
Colors/Coat
Bottom:
We offer the JB/KYB φ41 bottom in the same colors as its φ38 sibling in gloss black and silver to fit your motorcycle and choice of inner tube coating.
Inner Tube Coating:
The inner tube is available in TiN coating or chrome-plated, however, if you are looking for something different please get in touch.
Specs
The separately available JB-POWER extension kits allow chassis height adjustments to fit your motorcycle.
Normal
- Total Length：813.5mm
- Stroke：130mm
- Caliper Mount Pitch：62mm
- Damping: Compression/Rebound 12 Step (Cartridge Damper)
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：412cc
- Oil Level：147mm
CB1100R
- Total Length：836.5mm
- Stroke：130mm
- Caliper Mount Pitch：62mm
- Damping: Compression/Rebound 12 Step (Cartridge Damper)
- Including Preload Adjuster
- Oil：KYB#10
- Oil Quantity：412cc
- Oil Level：147mm
JB/ KYB Rear Shocks
Like the front forks, rear shock absorbers can be considered as important frame components that are closely related to frame rigidity and have a great influence on safety, handling, and riding comfort by handling the effects of the unsprung load and running speed of wheels and tires.
We were to create the best product possible by virtue of our conviction to make “Really good products that our customers truly desire” and outstanding technical prowess as a machine constructor and tuner.
Rear Shock With Tank
This JB/KYB Rear Schock Absorber was developed to perfectly suit literbikes and the air-cooled ’70s to ’80’s superbikes and provides a particularly exquisite balance when combined with the JB/KYB φ38 Special Front Fork. A separately sold Torque Rod Extension Kit is available for models where the genuine brake system would collide with JB/KYB Rear Shock Absorber.
Kawasaki
- Total Length：389mm
- Pitch：353mm
- Stroke：75mm
- Frame Mount Eye：φ14mm
- Swingarm Mount Eye：φ14mm
- Damping: Compression/Rebound 4 Step
(Cartridge Damper)
Including Preload Adjuster (Range: 35mm)
Compatible Models
- Z1000J/R (Torque Rod Extension Kit necessary!)
- Z1100R
- Z1/Z2
- ZEPHYR750
- ZEPHYR1100
- Z1000MK-II (Caliper position needs to be changed!)
- Z1100GP (Caliper position needs to be changed!)
Z1300 Rear Shock
This rear shock is a reproduction of the genuine Kawasaki Z1300 unit.
Although the damping is unit is equivalent to the Z1300 A1 specifications, it is equipped with the A2 springs that do not interfere with the shock body. The A1 type springs are also included.
Overhaul
Our skilled engineers perform full overhauls, oil, or seal changes for various JB-POWER suspensions types like the JB/KYB φ38 Front Fork.
Additionally, we offer a broad variety of spare parts that are usually in stock, please get in touch if you have any questions.
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