ISA
Sprockets of ISA is excellent in lightweight and strength, and uses high precise processed duralumin aluminium . ISA sprockets have three key performances necessary for motorcycle sprocket; precision, strength and abrasion resistance.
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Fits: KAWASAKI Z900RS, KAWASAKI Z900SE, KAWASAKI ZX-25R, KAWASAKI ZX-4R SE, KAWASAKI ZX-4RR KRT EDITION
I like the design.
Installed on ZX25RR.
Changed from 3,57 ratio in NORMAL to 3,42 ratio
We were able to make some changes to speed up the process.
If you lower the Driven Sprocket fraction any further, you will have to Cut the Chain!
I'm going to run a little wait and see.
NORMAL weight ratio is about 1 kg lighter
This alone is quite effective Large!
View detail
![Rear Sprocket [Drive Sprocket]](https://img.webike-cdn.net/catalogue/images/16991/t101_TS.jpg)
Fits: KTM 125EXC, KTM 125GS, KTM 125LC2, KTM 125MX, KTM 125SX, KTM 200EXC, KTM 200SX, KTM 250EX Racing, KTM 250EXC, KTM 250EXC-F, KTM 250MX, KTM 250SX, KTM 250SX-F, KTM 300EXC, KTM 300GS, KTM 300SX, KTM 350LC4 ENDURO, KTM 350SX, KTM 360EXC, KTM 380EXC
Used on KTM 250EXC Rear
I bought this for the Rear Sprocket of my KTM 250EXC, which I always use for touring on forest roads.
There is a slope in the forest road that I usually take, but I was having trouble climbing it.
I had been a Large minute long Final, so I chose 52T so that the Speed would be suitable for hills.
Then I was able to ride Speed as I entered the hill and climb all the way up.
KTM's Sprocket was unexpectedly not available in the lineup, and I was very grateful that ISA was selling it.
I will also buy ISA when I change the Setting!
View detail
![Rear Sprocket [Drive Sprocket]](https://img.webike-cdn.net/catalogue/images/103594/1647946659_lp_TS.jpg)
[Pillar of Humanity]. GB, Rear38T...
The OEMChain, which was delivered as a new car, had to be replaced after only 2000 km because the O-rings were breaking all over the place.
We decided to try the Rear 38T as well as the Normal chain, which had been shortened by the Rear sprocket 37T, to +2Piece.
Improvements
Even with a seat height of 1m and side bagBoth sides installed, I can accelerate up to 110km/h, regardless of the wind direction and uphill speed.
It is possible to run comfortably in 2nd to 4th gear even on tough climbs such as Okutama, Hakone, and Doshi.
What's Worse.
The Meter reading is 120 km/h even if you keep your upper body down. You can legally do the highest speed Attack on the New Tokyo-Nagoya.
Has the GB-like long-suffering quietness gone out and become like a tinkered TW or GRASS TRACKER?
Chain104Piece is too short and 106Piece is too long (see attached photo).
The conclusion is still the same. Rear37T. is the best, including cosmetics. But OEMChain is no good.
View detail
ISA couronne arrière en Duralumin
ISA couronne arrière en Duralumin
Pièce aux finiitons impeccables, durabilité exceptionnel avec le Duralumin.
Très satisfait du produit.
Merci à Webike!
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ISA Duralumin Rear Sprocket
Impeccably finished part, exceptional durability with Duralumin.
Very satisfied with the product.
Thanks to Webike!
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Grom Rear sprocket replacement
I changed from OEM 38 to 37 and installed one smaller size and did not feel any change. View detail