First car 1990



A bicycle in pursuit of speed is called a road bike in fact. Those in pursuits of even faster in small wheel, it is called the small wheeler load. However, COLOSSUS I want to dare called the sport bike.

In close but not the same thing even in the genre of car, there is a racing car and a sports car.
A racing car is to pursue the speed and the result.
On the other hand sports car emphasis on fun to operate than time record. If compare a racing car to a bicycle, it definitely is a road bike.
Road bike also is to pursue a speed like as racing car.
COLOSSUS, we aim to provide the joy of riding to the rider.

It will lightly accelerate and dancing while feeling the traction in the hill climb. The cornering like thumping the chest while conscious of the weight shifting to the front in the downhill.
Speed… Yes, but more than that , is a bike that can do to obtain the joy of manipulating through nice conversation with your own bike.

It is the COLOSSUS.


COLOSSUS is easy to say that the small wheeler bicycle with the front and rear suspension. However the suspensions attached on the COLOSSUS are different from ones usually used on a mountain bikes that mimicked suspension of a motor cycle.

Kimori uses unique suspension systems which are quite different from common suspension. And Kimori named these systems as MEAD and FLIG, which are elaborated below;

colossus ss

COLOSSUS SS (Proto type)



Multilayer Elastomer give on Additional-boost to Driving-force

MEAD Unit (Unit to change small power to momentum power )

A rear suspension is generally used to absorb the shock from bumpy road. However such rear suspension causes loss of power, because continuous pedaling and weight transfer add up and down movement to bike.

COLOSSUS rear suspension unit can be said as MEAD Unit(Multilayer Elastomer for Additional-boost to Driving force).

Professional bike racers use their strong leg power to make frame warp, at the same time, they use the power of resilience while releasing leg power as momentum of the bike, it is called as kick-back.

To achieve such kick- back by common leg power, KIMORI developed MEAD Unit.

MEAD Unit consists o multi-layer blocks of urethane elastomer and aluminium separator , and it can ensure enough capacity for sufficient power

Placing this MEAD unit in the center of the rear frame, COLOSSUS successfully realized “Kick Back” effect with less leg power.

And rider can suitably adjust the MEAD Unit depending on rider’s weight, leg power and usage by changing size of elastic urethane



“FLIG” (Patented)
Full-Link Geometry-Management

 FLIG unit(Unit to control and adjust the posture of the entire BIKE.)

So called front suspension generally is more or less similar to that of motor cycle. The Front suspension unit equipped on COLOCCUS is unique FLIG Unit (Full-Link Geometry-Management Unit).

Front is mainly consisted of high-precision air suspensions and is connected to main frame by link structure.

Although FLIG naturally absorbs shock coming from bumpy surface of the road, but the main purpose is to control the posture of the bike.

To control and adjust the optimal posture of the BIKE that changes from moment to moment while cruising, front suspension adopted link structure and the length of upper and lower arm makes unequal.

When cruising, FLIG absorbs smoothly undulation of the ground.

When braking, the FLIG makes front wheel descend moderately, and ensures braking power avoiding the front wheel to be locked,

When cornering after hard- braking, the FLIG makes ensure the grip of the front wheel and increases turning round ability. When accelerating or dancing ,the FRIG makes the front wheel perform like kicking the ground, and with synergy effect of the MEAD unit installed in the rear, rider can feel thrusting force that is like rider’s back being pushed (MEAD effect) . By adjustment of the air pressure, FLIG unit assures optimal setting wherever riding place is.



Link Structure of FLIG”

This is the core and specific structure of the front suspension structure of COLOSSUS(patented).

By changing the length of pillow-ball bearing of lower arm, certain change of alignment is available.

The link portion of FLIG consists of followings;

.front suspension unit that combine with steering axis

.head parts (bearing unit for steering)

.upper arm

.lower arm

.front fork

.head parts (bearing unit for steering)

.upper arm

.lower arm

.front fork

IMG_1546 IMG_1535 IMG_1533 IMG_1538

Movable axes of FLIG are;

. suspension

. head parts:2 axes

.upper arm: 2 axes

. lower arm :1 axis and 1pillow ball bearing

. front fork :1 axis

Kimori adopts special Teflon-coated dry bearing unit (patent pending) except two axes using pillow-ball bearings.

For safety purpose, double structure (bush and sub-bolt) is adopted. So the sub-bolt will be able to sustain even when the main bush is broken by strong loading impact.

Main bush adopts press-fit method against link portion or frame ,thus, becoming one combined unit with link and frame, and such structure can avoid dropout or looseness.

High precision standard is used for bush unit, ie, coaxial 0.03mm,pressing tolerance 0.005-0.015mm.

A2017T4 is used as bush material, and to protect from electric corrosion alumite processing are made.

Sub bolt is SUS cap-bolt, it is used for connecting axes.

Classic standard type of COLOSSUS, right-left sides of upper arms are independent units, and accordingly said bolt connects two sides.

To assure smooth movement of link portion and to protect from looseness, urethane washers are used, and fixed by locknut until slight deformation of urethane washer can be seen. Allowance between sub bolt and main bush is set as 0.2-0.3 mm.

When strong impact is given, such allowance release the power radically , and so washers to thrust direction.

Therefore, by such mechanism, even bush is broken as worst case, still deformed sub-bolt will hold link to avoid dropping out.

Safe and smooth operation is assured by such structure.


Whether MEAD or FLIG, these are newly invented structures for bike,

Kimori successfully has made various tests to ensure safety and efficacy, such as impact test for frame, bending fatigue test for front fork, rear impact test for front fork, pedaling stress test etc..

Next challenge

As for next challenge, Kimori is investigating into more safer measures.

For example, Kimori thinks that the rider’s damage must be smaller even when bike has crushed heavily to throw off the rider. So Kimori rather wants to wreck bike to minimize impact to rider’s body.

Therefore, Kimori is trying to fasten locknut in reverse direction or make easy bending point purposely on the lower arm to prevent pillow ball bearing from breaking off.

Motionless End (Patent pending)

Kimori adopted newly designed end which is specifically named as Motionless End.

Traditional type of rear-end, strong pedaling often cause the off-center of rear wheel. It’s so dangerous!

To prevent rear wheel from off-center, usually, very simple solution has been required, it is to clench quick lever very strongly with all rider’s force. Therefore it is difficult for many female riders.

Now, Kimori solved this issue fundamentally by newly designed special end. This end requires no change on usability and method of attaching/detaching wheel with quick lever. Moreover, this end assures “Free from Off-Center of rear wheel” using no strong force even female riders can do. .

By applying this solution, Off-Center problem for front wheel when using front disk brake also was achieved. Motionless end assures safe riding free from off-center of wheel, so long as quick lever is clenched enough to the degree of wheel cannot drop off.






KIMORI has two types of Colossus, Colossus and Colossus WR.

COLOSSUS adopts Space-Tubler-Frame. At the beginning stage, Colossuss tried to incorporate suspension unit at the internal side of the frame. Later, to simplify structure and in relation to suspension unit, present structure has been adopted.

Same concept adopted for rear suspension. Little change has been put for the frame structure in the course of adoption from suspension unit to MEAD system , for MEAD also is incorporated at the internal side of frame.

Precision of frame is within 0.03mm coaxially in the interest of the bearing.

To establish method for this hole, drilling process is not easy enough, because to put this process after completion of frame is almost impossible.

Colossus WR was developed to comply with the question “Why not simplify Colossus more?” The way to approach for frame is quite different between Colossus and Colossus WR; Colossus’s frame is 3D while WR is 2D. Both are different and difficult, yet both succeeded in making good marriage of design and function. Colossus WR adopted special oval pipes and the fork designed in aero-cross-sectional shape, and so on which make WR more attractive. WR inherits key essence of KIMORI’s technology of Colossus here and there. Both WR and Colossus adopted uncommon frame shape due to FLiG’s front suspension structure.


Colossus is so manufactured as to seek optimal function rather than design.

To fulfill best function, Kimori adopted wax brazing processing ,which is the best method for COLOSSUS’s frame. And only chain stay uses common frame material, other frame materials are Kimori’s original, use chrome-molybdenum alloy #4130 thickness 0.5~1.4 in places. Comparing to the early product, Colossus has been substantially changing to fit the best, though outer design has not changed much. In accordance with such changing, man-hour also has been increasing considerably.

Evolving technical skill day and day , positively create new technology and file patent one by one.

Kimori provides high quality product with low cost.

As far as we can tell, Colossus is quite unique bike, and meanwhile there are no other bikes that are comparable with COLOSSUS in the world.

KIMORI’s motto is INOVATION. To introduce most innovated bike ,COLOSSUS ,to the world,, Kimori will continuously pursue new technology and new concept.


1988 prototype