Brozz 250 Tech Info

[PeaceSportsAtlanta]

Idle Rpm: 1500

Spark Plug: D8TC

Spark Plug Gap: 0.6-0.7mm

Intake Valve: 0.4-0.6mm
Exhaust Valve: 0.5-0.6mm

Trans Gear Ratios
1st- 2.909
2nd- 1.867
3rd- 1.389
4th- 1.150
5th- 0.9545

Carb Jets
105 Main - 34 pilot

Tire sizes:
Rear--110/90/17
Front--90/90/19

Weight (Wet)- 305 lbs

OEM Sprocket--17/46 OEM
OEM Chain-- 428

Battery- 12M7AS-3A

Handle bar diameter- 7/8"

Inverted Fork Oil Capacity--320ml(from completely dry)
Fork Oil--5W, 10W, or 15W-----Rider preference
Standard Forks---200 ml

15hp at 7000 rpm
13 tq at 5500 rpm

Torque Specs per Bashan (May apply to all Bashan 250 Motorcycles)

Steering stem--Nut (Torque in N/M)

M22×1 50～60

M24×1 55～65

M25×1 60～70

M26×1 60～70

M27×1 70～80

Steering stem---Hex Nut

M22×1 50～60

M25×1 55～65

Steering stem--Locking cap screw

M10×1.5 40～50

M12×1.5 45～55

M14×1.5 50～60

Handle bar--Bolt

M10×1.25 45～55

Handle bar--Nut

M10×1.25 40～50

Upper connecting Plate--Screw

M8 25～30

Lower connecting Plate--Screw

M8 25～30

M10 35～45

M12 40～50

Disc brake--Screw

M8 25～30

M10×1.25 35～40

Brake disc--Screw

M8 25～30

Front wheel axle--Locking Screw

M10×1.25 40～50

M12×1.25 45～55

M14×1.5 50～60

Rear shocks--Screw

M8 25～30

M10×1.25 35～40

M12×1.25 55～65

Rear shocks--nut

M8 25～30

M10×1.25 40～50

Rear Wheel axle--Locking Screw

M12×1.25 45～55

M14×1.5 50～60

M16×1.5 85～95

Rear fork axle--Locking Screw

M10×1.25 35～45

M10×1.25 40～50

M12×1.25 45～55

M14×1.5 50～60

Engine------Bolt/Nut

M8 35～45

M10×1.25 40～50

Engine Support--Bolt/nut

M10×1.25 45～55

Rear Sprocket---Nut

M8 25～30

M10×1.25 40～50

Rear Sprocket---Bolt

M10×1.25 45～55

Rear Sprocket---Bolt

M10×1.25 45～55

Swing Arm-----Nut

M12×1.25 45～55

M14×1.5 50～60

[Armycopter]

Wow, thanks Jeff. This is super helpful!

[descartesairplane]

This is great! Thanks Jeff.

[herbie]

Thanks for all the info, the torque specs is nice to have for sure.The oem chain is 428 though

This thread should probably be a sticky.

[franque]

Just a thought... It might be nice to list the torque specs on Imperial, too, I don't think that many Americans are measuring in Newton-meters.

[rcjetn]

A few minutes with a converter gave me this Newton/Meters to Foot/Pounds

(rounded up when necessary)


25=18
30=22
35=26
40=30
45=33
50=37
55=41
60=44
65=48
70=52
75=55
80=59
85=63
90=66


Jack

[Happypappy]

Love this. About to buy my Brozz. So needed this .

[Rod75]

Can it be lowered? Im 5"6"

[Armycopter]

Originally Posted by Rod75

Can it be lowered? Im 5"6"

You can shave the seat foam down. I did that so my son could use it. He is about your height. I just bought an extra seat for $40 and shaved it down.

[Dr.James E. Wang]

Thanks Jeff!!! I am sure that you were able to answer a lot of questions riders have had. FYI you do have the correct 428 chain listed.
Dr. James Edzackery Wang

[paulsstag]

Originally Posted by Rod75

Can it be lowered? Im 5"6"

Yes it can be lowered. in the front loosen the triple tree bolts that hold the fork tubes and slide the fork tubes up as much as you want or can get away with. This is zero cost. If its not enough you could fit shorter springs in the front struts.

As for the rear , i drilled new holes below the original lower shock mount (its part of the swing arm). i drilled the new hole 3/4 inch below the original hole and this dropped the bike about 2 inches.

I think i could have gone 1 inch down if i needed more or 1/2 inch for less lowering.

I used a long drill bit (8 or nine inches long) and did not remove the wheel, only the chain guard. obviously you need to support the bike to do it.

Your next problem is the side stand, which may become too long for the bike , this would require a piece to be cut out and re welded, or a shorter side stand from a different model.

[Marc Hufnagel]

Originally Posted by paulsstag

Yes it can be lowered. in the front loosen the triple tree bolts that hold the fork tubes and slide the fork tubes up as much as you want or can get away with. This is zero cost. If its not enough you could fit shorter springs in the front struts.

As for the rear , i drilled new holes below the original lower shock mount (its part of the swing arm). i drilled the new hole 3/4 inch below the original hole and this dropped the bike about 2 inches.

I think i could have gone 1 inch down if i needed more or 1/2 inch for less lowering.

I used a long drill bit (8 or nine inches long) and did not remove the wheel, only the chain guard. obviously you need to support the bike to do it.

Your next problem is the side stand, which may become too long for the bike , this would require a piece to be cut out and re welded, or a shorter side stand from a different model.

I wish I had a longer side stand. I'm always afraid it's going to fall over and use a 2x4 and it still leans a bit too much.