NINJA 250 520-45T/14T

520-45T/14T "may be the transmission specification of this period's vehicle models. In 2013, the model underwent a major facelift, and the 2018 model launched in 2017 adopted an improved version of the Ninja H2 lightweight frame and an extended rear rocker arm. The 2024 model, released in September 2023, is equipped with a liquid cooled 4-stroke inline 2-cylinder engine and a 6-speed gearbox. The specifications and equipment are the same as the previous generation, with the main changes being the color and pattern design

520 Chain Specification: "520" represents the size specification of the chain. Among them, "5" indicates that the length of each link in the chain is 5/8 inches, which is approximately 15.875 millimeters; 20 "indicates that the inner width of the chain is 2.0/8 inches, which is 6.35 millimeters. This specification of chain is suitable for medium displacement motorcycles and can meet the power transmission requirements of Ninja 250

45T/14T sprocket teeth: "45T" is the number of teeth on the rear sprocket, and "14T" is the number of teeth on the front sprocket. This gear combination determines the transmission ratio of the motorcycle, which is 45 ÷ 14 ≈ 3.21. A larger transmission ratio means that the vehicle can obtain greater torque during starting, acceleration, and climbing, resulting in stronger power performance, but high speeds on flat roads may be subject to certain limitations. A smaller transmission ratio allows the vehicle to achieve higher speeds on flat roads, but the torque output is relatively weak

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