Let's discuss about maintainance first [b'coz important isnt it]

for me...

[First 1000 km mileage]
first 250km - not more than 60km/h
2nd 250km - not more than 80km/h
3rd 500km - not more than 100km/h

change EO [Motul 3000 10w-40 Mineral] and ori OF

[2nd 1000 km mileage]
500km pantang - not more than 100km/h
next 500km/h - not more than 120 km/h

then change to Motul 300v Factory Line,Linx Selenia, Castrol fully synthetic with new oil filter... Speedinggg...
must remember every changing new type of EO need to use new OF [i.e:  Motul 5100 Ester > Motul 300v Factory Line ]
and every oil filter can use every 2 time EO changing

next
2. SPARK PLUG - every 8000km [recommend NGK G-Power]
3. BEARING TAYAR - 10000KM (check/tukar jika perlu)
4. Oil filter (tukar sekali ngan minyak enjin)
5. Air filter element- 20,000KM(tukar jika perlu)
6. Check paras air bateri(utk bateri biasa)(setiap minggu)
7. Check air rediator(setiap minggu)
8. Minyakkan dan tegangkan rantai.(setiap minggu)
9. Check tekanan angin tayor (seminggu sekali)
10. Brake fluid  - setiap 30,000km / dua tahun sekali
11. Fork oil      - setiap 40,000km / dua tahun sekali
12. Coolant      - setiap 10,000km masa adjust valve  Roll Eyes
13. Brake pads - setiap 10,000km / bila perlu
14. Liquid Coolant - clean and refill every 2 years or refill bila dah nak abis

OPTIONAL:
CHANGE NEW TYRE [b'coz im oredy use Vee Rubber within 5 month oredy keluar dawai]
u need to know rear tyre cepat botak than front tyre
recommend to use with average budget: 80/90 or 90/80 size with below i list it
Swallow Thunder  [cheap but good grip]
Maxxis M6002
Maxxis Diamond 3D

for performance without engine modify:
for sure its sprocket combination

Front teeth | Rear teeth= Gear Ratio

[TOP SPEED]
16 35 = 2.19
16 36 = 2.25
16 37 = 2.31
15 35 = 2.33
16 38 = 2.38
15 36 = 2.4
16 39 = 2.44
15 37 = 2.47
16 40 = 2.5
14 35 = 2.5
15 38 = 2.53 [I'M ON TESTING OF THIS COMBINATION]
16 41 = 2.56
14 36 = 2.57

15 39 = 2.6 Stock gear ratio

[PICK UP]
16 42 = 2.63
14 37 = 2.64
15 40 = 2.67
16 43 = 2.69
14 38 = 2.71
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79
15 42 = 2.8
16 45 = 2.81
14 40 = 2.86
15 43 = 2.87
16 46 = 2.88
14 41 = 2.93
15 44 = 2.93
15 45 = 3
14 42 = 3
15 46 = 3.07
14 43 = 3.07
14 44 = 3.14
14 45 = 3.21
14 46 = 3.29
so if you want more top speed than stock settings
use 14t front and 36t rear
or 16t front and 41t rear

if you want more acceleration
use 13t front and 34t rear
or 16t front and 42t rear

and depend on your weight and riding skill factor

BIGGER TIRES (100/80 and up): TOP SPEED
SMALLER TIRES (80/80 and below): PICK UP