EC 125 (2000 - 2011) rear sprocket 520 51t work-z | SUNSTAR SPROCKETS

2000 - 2011 GAS GAS EC 125
Rear sprocket 520 51t work-z | SUNSTAR SPROCKETS

Fits to:

GAS GAS EC 125 [2000 - 2010]
GAS GAS EC 125 HALLEY [2011 - 2011]
GAS GAS EC 125 SIXDAYS [2009 - 2011]
$66.44
$73.83 -10%
  • Chain pitch: 520
  • Number of teeth: 51

Estimated delivery date to your address:
Dec. 25, 2024

2004 - 2007 GAS GAS EC 125
Transmision ratio:

12131415
413.42
-7.5%
3.15
-14.6%
2.93
-20.7%
2.73
-26.0%
423.50
-5.2%
3.23
-12.5%
3.00
-18.8%
2.80
-24.2%
433.58
-3.0%
3.31
-10.4%
3.07
-16.8%
2.87
-22.4%
443.67
-0.7%
3.38
-8.3%
3.14
-14.9%
2.93
-20.6%
453.75
+1.6%
3.46
-6.2%
3.21
-12.9%
3.00
-18.8%
463.83
+3.8%
3.54
-4.2%
3.29
-11.0%
3.07
-16.9%
473.92
+6.1%
3.62
-2.1%
3.36
-9.1%
3.13
-15.1%
484.00
+8.3%
3.69
standard
3.43
-7.1%
3.20
-13.3%
494.08
+10.6%
3.77
+2.1%
3.50
-5.2%
3.27
-11.5%
504.17
+12.8%
3.85
+4.2%
3.57
-3.3%
3.33
-9.7%
514.25
+15.1%
3.92
+6.2%
3.64
-1.3%
3.40
-7.9%
524.33
+17.4%
4.00
+8.3%
3.71
+0.6%
3.47
-6.1%
534.42
+19.6%
4.08
+10.4%
3.79
+2.5%
3.53
-4.3%

Specifications

Manufacturer SUNSTAR SPROCKETS
Chain pitch 520
Color Natural
Material Steel
Position Rear
Number of teeth 51
Style Lightweight
Type Drive
Units Each

Product description


Electro-less nickel plating gives Works Z sprockets more of a brushed/natural stainless steel appearance but doesn''t compromise performance, durability or corrosion resistance
Constructed of the highest-quality stainless steel and 100% heat-treated for the ultimate combination of strength and durability
Unique offset tooth design for exceptional self-cleaning capabilities, extending the life of the entire chain drive system by removing mud and dirt more efficiently
Perfect for use in adverse off-road conditions where extremely wet, muddy and/or sandy conditions are encountered
Up to 50% lighter than the OEM steel (depending on application and number of sprocket teeth)
Twice the hardness of standard steel and 20% laterally stronger up to three times the overall life
Five times the hardness and durability of aluminum and up to 10 times the overall life
Include matching hardware set (nuts, bolts and washers)
Used by top teams and riders in GNCC, WORCS and motocross

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