Reviews
Fits: YAMAHA FAZER8, YAMAHA FZ8S, YAMAHA MT-07, YAMAHA MT-09 TRACER GT, YAMAHA MT-09 TRACER, YAMAHA MT-09, YAMAHA MT-09SP, YAMAHA MT-10, YAMAHA MT-10SP, YAMAHA NIKEN GT, YAMAHA NIKEN, YAMAHA TDM900, YAMAHA XSR700, YAMAHA XSR900, YAMAHA YZF-R1, YAMAHA YZF-R1M
When in doubt, this is it.
I bought this to match the Rear, and unlike the Rear, which is flashy in material and appearance, this is a plain but Large component.
Without hesitation, we chose SUNSTAR because of its security and reliability. We have and will continue to choose SUNSTAR for our replacements.
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Sunstar Chain and Sprocket
Paired this together with the SUNSTAR Chain 520 Gold and Rear Sprocket Duralumin. Its better than the stock. Riding felt different when installed View detail
Fits: SUZUKI GSX250R, SUZUKI V-Strom250, SUZUKI GSR250, SUZUKI GSR250 F, SUZUKI GSR250 S
Change from OEM 14 to 15
The OEMFront sprocket on the GSX250R had 14T and was replaced with a 15T for the purpose of reducing RPM on the highway.
If the Rear Sprocket remains at the OEM tooth count of 46, the speed difference will be about 6-7% if the RPM and selected GEAR are the same.
If high speed touring is the main purpose, the change from 14T to 15T is for Large.
TradeOff is also available, so there is no need to force replacement if you are not currently dissatisfied.
The following are three impressions from the trial run.
・Highway speed range is more comfortable
(RPMs are reduced at the same speed compared to the 14T, and vibration is somewhat suppressed)
Careful GEAR selection at low speeds and on uphill roads.
(Same GEAR, but with the same 14T feelings, it's awkward)
Gear changing on public roads will be slightly less
(less chance of using 6th gear)
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Fits: YAMAHA SEROW225WE, YAMAHA SEROW225, YAMAHA SEROW225S, YAMAHA BRONCO, YAMAHA SEROW225, YAMAHA SEROW225W, YAMAHA YZF-R15, YAMAHA SEROW225WE, YAMAHA YZF-R15
Stable SUNSTAR
The price is a little high. View detail
Fits: YAMAHA YZF-R3, YAMAHA YZF-R25, YAMAHA YZ450F, YAMAHA YZ426F, YAMAHA YZ400F, YAMAHA YZ250, YAMAHA WR450F, YAMAHA WR426F, YAMAHA WR400F, YAMAHA WR250, YAMAHA TZR250SPR, YAMAHA TZR250SP, YAMAHA TZR250RSR, YAMAHA TZR250R, YAMAHA TZR250, YAMAHA TDR250, YAMAHA SRV250S, YAMAHA SRV250, YAMAHA Renaisa, YAMAHA R1-Z
durability
I use it for its durability.
(10000-30000km)
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Fits: YAMAHA YZ125, YAMAHA WR250F, YAMAHA WR250R, YAMAHA WR250X
It's nice and easy to ride!
I installed it on my WR250R
I have been doing both off-road racing and city driving, so I had an OEM 13 front sprocket, but I decided not to do off-road racing, so I bought a 14T to increase the size to a higher speed.
As for Merit...
No more need for busy SHIFT UP when sending outgoing messages.
Maximum Speed Up
Demerit is
Increased Downshift in traffic jams and on steep uphill slopes.
I think this is about it for Demerit.
As a result, I am happy with the change because I am riding comfortably.
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Fits: YAMAHA SR400, YAMAHA SR400S, YAMAHA FZR400, YAMAHA FZR400R, YAMAHA FZR400RR, YAMAHA FZR400RR-SP, YAMAHA SR500
Chain replacement
It is inexpensive and well made. I can usually see it.
Not at all.
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Fits: KAWASAKI Ninja250, KAWASAKI VERSYS-X250, KAWASAKI Z250, KAWASAKI ZX-25R, KAWASAKI D-TRACKER, KAWASAKI D-TRACKER X, KAWASAKI KLE250, KAWASAKI KLX250, KAWASAKI Ninja250R, KAWASAKI Ninja250SL, KAWASAKI Z250, KAWASAKI Z250SL, KAWASAKI Z400, SUZUKI 250SB
Manufacturer for Peace of Mind
Circuit to change Final
Purchased
Chosen because I wanted to pretend to be Short
Chain slider also needs to be inspected.
It seems to decrease quickly.
It is a secure Brand and I had no problems with the installation.
The first time I removed the OEM's, I had a tremendous amount of difficulty.
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Fits: HONDA CRF250RALLY, HONDA CRF250L, HONDA CRF250M, HONDA CBR250R, HONDA CB250R, HONDA AX-1, HONDA XR250, HONDA XR250 BAJA, HONDA DEGREE, HONDA XR250Motard, HONDA CB300R
Front sprocket15T CB250R
HONDA CB250R's NORMAL is 13T, but we changed it to 15T because we have to turn the Engine on the highway. No modification is required and it can be installed with Bolt On.
No readjustment of the speedometer is required.
With the NORMAL 13, the Meter display showed 88 km/h even at a GPS speed of 80 km/h, which is about 10% higher. However, after replacing the front sprocket with a 15T, the GPS speed and Meter speed are now almost identical.
I expected to see an increase in distance in terms of fuel consumption, but the higher GEAR ratio and higher engine load offset this increase. However, the higher GEAR ratio and higher engine load offset the increase in speed, and fuel consumption was essentially unchanged from the time when the engine was in NORMAL 13.
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Fits: SUZUKI 250SB, KAWASAKI ZX-25R, KAWASAKI Z400, KAWASAKI Z250SL, KAWASAKI Z250, KAWASAKI Z250, KAWASAKI VERSYS-X250, KAWASAKI Ninja250SL, KAWASAKI Ninja250, KAWASAKI KLX250, KAWASAKI D-TRACKER X, KAWASAKI D-TRACKER, KAWASAKI Ninja250R, KAWASAKI KLE250
Might be a good idea!
When I replaced the Rear Sprocket, I also replaced the Front Sprocket. As expected, I feel that the new front end is smoother than the old one! View detail
Fits: HONDA CBR900RR, HONDA VFR750F, HONDA CBR1000RR SP, HONDA CBR1000RR, HONDA CRF1000L DCT, HONDA CBR650F, HONDA CRF1000L, HONDA CBF600, HONDA CBF600 S, HONDA CBR600F4i, HONDA XL1000V Varadero, HONDA CBR1000RRR SP, HONDA CB650R, HONDA CBR650R, HONDA CBR1000RRR, HONDA NR750, HONDA CBR600F, HONDA CBR600F Sports, HONDA CBR600RR, HONDA CB600F HORNET
SUNSTAR Front sprocket 525–16T
Prices were about the same as OEMSprocket.
There is a Black color surface treatment that hides it but looks good.
The weight is lighter than the OEM model due to the lack of rubber for running noise control. The installation itself is not too difficult, but when working alone, you need to pay attention to safety by properly securing the motorcycle so that it does not move.
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Fits: KAWASAKI ESTRELLA RS, KAWASAKI ESTRELLA LE, KAWASAKI 250TR, KAWASAKI ESTRELLA, KAWASAKI ESTRELLA, KAWASAKI ESTRELLA
Easier to ride.
Replacing the FSprocket has expanded the range of use of 3rd and 4th gears!
Before the replacement, I had to immediately go up to 5th gear, but I think it has become much easier to ride.
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Fits: KAWASAKI Ninja250, KAWASAKI VERSYS-X250, KAWASAKI Z250, KAWASAKI ZX-25R, KAWASAKI D-TRACKER, KAWASAKI D-TRACKER X, KAWASAKI KLE250, KAWASAKI KLX250, KAWASAKI Ninja250R, KAWASAKI Ninja250SL, KAWASAKI Z250, KAWASAKI Z250SL, KAWASAKI Z400, SUZUKI 250SB
Changed to 14→13
I installed it on my ZX25R at Circuit where I often go.
I cut off the dandruff and it wasn't much use, so I threw a shuriken instead.
It flies in an interesting way.
I thought maybe the original usage was this way.
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Fits: HONDA CB1300ST, HONDA CB1300SB, HONDA CB1300SF, HONDA CBR1000F, HONDA VFR750F, HONDA VF1000R, HONDA CBX750F, HONDA VF750F, HONDA CB900F, HONDA CB1100, HONDA X11, HONDA CBR1100XX, HONDA X4 TypeLD, HONDA X4, HONDA CBX750F BORD'OR, HONDA VF1000F, HONDA VF1000F Intercepter, HONDA CB1100F, HONDA CB1100R, HONDA CB750F INTEGRA
Vibration Improvement TouringSpec!
By raising the Front1, the rotation could be reduced a little.
It can be felt especially at high speeds.
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Fits: HONDA CRF250RALLY, HONDA CRF250L, HONDA CRF250M, HONDA CBR250R, HONDA CB250R, HONDA AX-1, HONDA XR250, HONDA XR250 BAJA, HONDA DEGREE, HONDA XR250Motard, HONDA CB300R
15T Front sprocket (SUNSTAR)
Changed from standard CB250R Sprocket to 15T.
The change was made because there was not as much first gear extension as expected and because it would soften the embrittlement.
It was not as effective as expected, but there is a sense of improvement.
The HappyMeter error of the speedometer has also been reduced, and it feels closer to the actual speed.
The replacement work was planned to be done by himself, but was carried out by Shop due to other consultations.
As a result, I am glad I asked for help. If I had done the work by myself, I would have had a hard time fitting the Chain Guard, etc.
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Fits: KAWASAKI ESTRELLA RS, KAWASAKI ESTRELLA LE, KAWASAKI 250TR, KAWASAKI ESTRELLA, KAWASAKI ESTRELLA, KAWASAKI ESTRELLA
ESTRELLA has a 16T Recommendation
[How is it used?
I wanted to make ESTRELLA's Final longer, but the Rear Sprocket, including the Other Brand Product, only has the OEM number of pins, and only SUNSTAR has a 16T Front sprocket, which is longer than the OEM. One Front sprocket has about three times the change of the Rear sprocket, but I wanted to make the Final longer anyway, so I tried the Front 16T.
Was the one you received as per Image?
The product was as per Image, as I have used made in sunstar Sprocket for other vehicles.
It will be a Black Sprocket made by Chromoly, but it has been carefully processed and is expected to be durable.
Was the installation difficult?
Quantity with Rear Sprocket and Chain this time.:The replacement was a set of 3-items, but if you only need to replace the front, you can remove it if you have 27 sockets. However, removing the Washer Crimp and the Nut itself is quite large, and even with the Rear brake in 1st gear, I could not remove it by hand, so I borrowed an Impact to do it.
How was your experience with it?
The driving has drastically changed after changing to Front16T. Basically, I commute down the main road, so it is good if I can drive comfortably in the range of about 60 km/h. However, with the Number of teeth on the OEM, I felt that the RPM was too high even when cruising at 60 km/h, or that I needed one more speed. The 16T has reduced the RPMs when cruising in 5th gear, which improves fuel efficiency, reduces vibration, and reduces fatigue.
If I had to say something negative, I would say that the Torque feel has faded with the longer speed, so when re-accelerating after deceleration, the GEAR is still the same and just opening the throttle is not enough to make it lean. If you drop one gear, there is no problem at all.
[Included Parts:were they on?
SprocketSingle Body only.
[Was there anything that disappointed you?
none in particular
Other items that would be helpful
Installation points and hang/Availability and clarity of the Instruction Manual/Points to consider/Items to purchase/Opinions and requests to the Manufacturer
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Fits: YAMAHA FZ1-N FAZER, YAMAHA YZF-R1 SP, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA YZF-R1, YAMAHA XJR1300 C
For 520Conversion of XJR1300C
[How is it used?
I used it on my MainMotorcycle XJR1300C.
This is a Sprocket that Custom ShopJAM, which used to handle XJR as its main product, requested SUNSTAR to create for 520 for conversion.
SUNSTAR usually has a lineup. 18 guns is expensive since it's a very rare Size...
Rear Sprocket is ISA.
Part numbers are Y-23-40. Rear 40 guns are mounted against Front 18 guns.
I think the OEM was 17-42, so it is a super little bit LongSetting.
Was the one you received as per Image?
It was the very Sprocket of SUNSTAR.
The accuracy is unquestionable. There were no elements of texture that made me uneasy.
Was the installation difficult?
As shown in the image, there is a direction to install the Sprocket, so be careful not to make a mistake.
The size of the front sprocket nut is 36mm.
The tightening Torque is 85 Nm, and the use of Locktite is indicated.
When loosening or tightening, one person can easily work alone by straddling the vehicle body and stepping on the rear brake as hard as possible.
So it is important to always loosen the Rear wheel and Chain before removing them.
How was your experience with it?
Since it is one size larger than OEM, you can rest assured that it will not jump teeth even if you use high RPMs the last time you run it.
Thanks because SUNSTAR is the only way to go unless you special order from ISA or other places.
Please don't discontinue...
[Included Parts:were they on?
There is none. The Memo paper with important instructions is included in the package, so be sure to follow it.
[Was there anything that disappointed you?
I don't have any. If I may say so, just a little cheaper!
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Fits: SUZUKI VOLTY, SUZUKI ST250, SUZUKI ST250 Etype, SUZUKI GrassTracker, SUZUKI GrassTracker BIGBOY
The speed range is now easy to use.
GRASS TRACKER BIGBOY Speed had no growth, so Sprocket replacement was performed.
The low-speed Torque drop, which was a concern, was hardly noticeable.
I can now ride comfortably from city driving to Touring.
Installation can be done as a DIY project if you have the tools and motivation.
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Purchased this time together with ChainConversion
Product Name
SUNSTAR SUNSTAR Front sprocket
Item Number
3F3-17
Vehicles
GSX-R1000R
Number of man-hours
Around 1 hour
Why did you choose this product?
The installed Chain was due for replacement, so Chain was Conversion.
This time we will be replacing Sprocket in conjunction with Chain's Conversion.
As for SUNSTAR, we have been using it for a long time and it is durable enough, so we chose it in the expectation that it would be reliable.
Impressions after using it
Since it is for Conversion, the teeth themselves are thin and have the SUNSTAR's unique fleshing out, which is a nice touch. (I forgot to take a picture...)
I installed it and drove the car without any unusual noise, so I think it meets the minimum functionality.
From my own experience, as long as the Chain is properly adjusted, it can be used for a long time.
I will continue to use it carefully so that it will last for a long time.
▼ Attention
The GSX-R1000R's front sprocket is a large nut and very hard and tight, so it may need an Impact.
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The quintessential SUNSTAR
It's a quintessential SUNSTAR.
Beautifully and well made.
I have an overwhelming sense of trust in them.
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