Motorcycle large displacement sprocket

Structural design features: The tooth profile of large displacement motorcycle sprockets is usually optimized and designed using involute tooth profiles or special tooth profiles with appropriate precision, such as circular arc tooth profiles. This design can mesh well with the chain, reduce the jumping and noise of the chain during transmission, and improve transmission efficiency and stability. For example, the sprocket profile of some high-performance and large displacement motorcycles will be customized according to different riding conditions and power output characteristics to achieve optimal transmission effects

Wheel hub structure: The wheel hub structure of large displacement sprockets is generally more sturdy to withstand the load caused by high torque and high speed. Some sprockets may adopt reinforced wheel hub designs to increase the thickness and strength of the hub, or use special spoke structures to improve overall rigidity and stability. At the same time, the design of the wheel hub will also consider the needs of heat dissipation and weight reduction, and reduce the temperature and weight of the sprocket through hollowing out, ventilation, and other methods

Difference from small displacement sprockets

Size and strength: Large displacement sprockets are usually larger in size and have thicker chain specifications, which can withstand large tensile and torque forces.

. For example, small displacement motorcycles commonly use 428 chains and smaller sprockets, while large displacement motorcycles often use 525 or 530 chains and corresponding larger sized sprockets

Transmission ratio selection: Large displacement motorcycle engines have high power and torque. In order to fully utilize the power, the selection of transmission ratio is different from that of small displacement motorcycles. Large displacement vehicles may adopt smaller transmission ratios to prevent excessive engine speed during high-speed driving, thereby reducing fuel consumption and noise, while also improving speed suitability performance; In order to achieve better acceleration performance with limited power, small displacement cars usually use larger transmission ratios

Maintenance and upkeep

Regular inspection: It is necessary to regularly check the wear of the sprocket, including the wear of the tooth profile and the tension of the chain.

. Generally, a comprehensive inspection should be conducted every 5000-10000 kilometers to check whether the sprocket teeth are worn or deformed, and whether there are significant changes in the pitch of the chain

Lubrication and maintenance: Regularly lubricate the sprocket and chain, using one-on-one chain lubricant, and lubricate every 1000-2000 kilometers. When lubricating, it is necessary to ensure that the lubricating oil is evenly applied to all parts of the chain, especially the joints of the chain links and the tooth surfaces of the sprockets, to reduce friction and wear

Cleaning work: After each ride, the sprocket and chain should be cleaned in a timely manner to remove impurities such as dust, dirt, and oil on the surface. Soft bristled brushes or damp cloths can be used for cleaning to avoid scratching the surface of the sprocket with overly sharp tools. For stubborn oil stains, specialized chain cleaners can be used for cleaning, but it is important to wipe them dry and apply lubricating oil promptly after cleaning

Click to view the motorcycle model parameter table：

		Chain type	number of teeth
1	Alpha	420	36
2	Alpha	420	39
3	Alpha	420	41
4	Alpha	420	43
5	Alpha	420	46
6	pit bike	420	36
7	pit bike	420	39
8	pit bike	420	41
9	pit bike	420	43
10	pit bike	420	46
11	pit bike	428	36
12	pit bike	428	39
13	pit bike	428	41
14	pit bike	428	43
15	pit bike	428	46
16	CG/CB	520	36
17	CG/CB	520	39
18	CG/CB	520	41
19	CG/CB	520	43
20	CG/CB	520	46
21	CG/CB	520	49
22	CG/CB	525	39
23	CG/CB	525	41
24	CG/CB	525	43
25	CG/CB	530	39
26	CG/CB	530	41
27	CG/CB	530	43
28	dirt bike	520	36
29	dirt bike	520	39
30	dirt bike	520	41
31	dirt bike	520	43
32	dirt bike	520	46
33	dirt bike	520	49
34	dirt bike	525	41
35	dirt bike	530	41
36	139fmb	420	13
37	139fmb	420	14
38	139fmb	420	15
39	139fmb	420	16
40	139fmb	420	17
41	139fmb	428	13
42	139fmb	428	14
43	139fmb	428	15
44	139fmb	428	16
45	139fmb	428	17
46	CG/CB	428	13
47	CG/CB	428	14
48	CG/CB	428	15
49	CG/CB	428	16
50	CG/CB	428	17
51	CG/CB	428	18
52	CG/CB	428	19
53	CG/CB	520	12
54	CG/CB	520	13
55	CG/CB	520	14
56	CG/CB	520	15
57	CG/CB	520	16
58	CG/CB	520	17
59	CG/CB	520	18
60	CG/CB	520	19
61	CG/CB	520	13
62	CG/CB	525	14
63	CG/CB	525	16
64	CG/CB	525	18
65	CG/CB	530	13
66	CG/CB	530	14
67	CG/CB	530	16
68	CG/CB	530	18