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YOSHIMURA

Camshaft [ST-1M]

Name: Camshaft [ST-1M]
Brand: YOSHIMURA
SKU: 21430449
Price: 155.68 USD
Availability: OutOfStock
Rating: 5.0 (4 reviews)

Product # 211-40A-2150

5 (4 reviews)

Tariff-Free

155.68 USD (23,100 JPY)

Webike Point: +231 pt (1.55 USD)

Delivery Information

This item is discontinued.

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FITMENT

HONDA

MSX125 (GROM)

13-16 [Vehicle type]EBJ-JC61 [Engine type]JC61E
MSX125 (GROM)

17-20 [Vehicle type]2BJ-JC75 [Engine type]JC75E
MSX125
Monkey125

Vehicle Model]2BJ-JB02 [Engine Model]JB02E

Open Fit Model Information Table

Product detail

Type: ST-1M
MAX LIFT(mm):IN 6.25mm/EX 6.25mm
1mm DURATION(degree):IN 225 degrees/EX 220 degrees
Standard tappet clearance (mm):IN 0.08-0.12mm/EX 0.08-0.12

**When using this product, be sure to adjust the fuel level using BAZZAZ.
*Fuel adjustments must be made to achieve the desired performance.
*Please be sure to measure and adjust the tappet clearance and valve timing before installation.
*BAZZAZ is not available for C125, so it is necessary to adjust the fuel by other products..

The ST-1M camshaft was developed to bring out the performance of the "Standard Engine & Yoshimura Cyclone" for the GROM.
This is a bolt-on camshaft that replaces the stock camshaft and is used with fuel adjustment.
Both power and torque exceed the standard throughout the entire range, and acceleration is smooth and powerful right up to the rev limit.

Points of Attention

* If there may be an instruction manual included, it will be written in Japanese.

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Customer Reviews

5.0 /5

(4 reviews)

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YOSHIMURA

Camshaft [ST-1M]

Fits:HONDA MSX125 (GROM) 13-16 [Vehicle type]EBJ-JC61 [Engine type]JC61E, HONDA MSX125 (GROM) 17-20 [Vehicle type]2BJ-JC75 [Engine type]JC75E, HONDA MSX125 , HONDA Monkey125 Vehicle Model]2BJ-JB02 [Engine Model]JB02E, HONDA Super Cub C125 Vehicle Model]2BJ-JA48 [Engine Model]JA48E

mateen

Installed on: HONDA Monkey 125

Excellent

Feb 14, 2020

Smooth sailing

As I use it daily up hill and lots of stop and go traffic, I chose the ST-1M. It is easy to install but this cam definitely needs tuning and the stock fuelling is not right. After tuning rides smooth, torque curve is also good. There is no sudden power surge.Only mods chimera short ram intake and TSR slip on pipe. Sprocket ratio 15/33.

Helpful?

Excellent

Sep 12, 2018

Yoshimura Camshaft [ST-1M] for GROM (with bore up kit.).

After fitting a 181cc bore up kit the power was all low and middle in the rev range with nothing but slow rising revs up high. I fitted the Yoshimura Camshaft [ST-1M] to help keep the power building in the high range. After fitting the Yoshimura Camshaft [ST-1M] my GROM felt like it could rev more quickly towards the rev limit. Gone was the (rev) wall that my GROM hit just when you needed to rev out quickly to the limiter. The power still flattens out after 7500rpm but it doesn't just stop like with the standard camshaft. Fitting requires some special tools along with basic skills. Standard GROM camshaft has a engine decompression mechanism attached, the Yoshimura camshaft does not, I have found no difference in engine starting without the engine decompression mechanism. The Yoshimura Camshaft [ST-1M] comes with recommended valve clearances and fuelling settings for std. 125cc engines, I have a piggyback fuel injection controller with AFR sensor. From my experience a reputable high lift cam is a must for bore up kits, the Yoshimura Camshaft [ST-1M] suits my riding style while improving my GROMs starting and smoothing it's idle.

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YOSHIMURA

Camshaft [ST-1M]

Japan User(translated)

Excellent

Oct 19, 2017

Why is this effective?

It was my first High Camshaft exchange, but it was attached without difficulty.

I will go around the engine well with the feeling of adding NORMALPower curve? Climb GunGun uphill as well!

Why is this effective?

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YOSHIMURA

Camshaft [ST-1M]

Japan User(translated)

Excellent

May 2, 2015

It is.

I replaced Camshaft for me for the first time.
I decided to install it arbitrarily by reading the Instruction Manual and ordered it. But there is no particular installation Instruction Manual etc. (Numbers of Setup and Data etc are enclosed) Net found another Instruction Manual of Manufacturer and installed it. Especially it was attached in about 2 hours including adjustment without adjustment.
I ran enclosed value for enemag and tried running.
The impression is Torque, feeling of acceleration is fleshed after a while. But after all it is 125cc of GROM, there is not a feeling of acceleration that the body brings, but the feeling of running is gone as the dull feeling before it gets lost.
In this Parts, I felt fun to play and I felt that the pleasures flew up steadily.
Afterward, I can not see it, but the degree of self-satisfaction that YOSHIMURACam is included is very high.

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Camshaft [ST-1M]

FITMENT

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