Dennis Kirk Inc.
Search Within
Ride Search
Top 3 Product Matches

40 Tooth Rear Steel Sprocket For 520 Chain - JTR1478.40

  • Part #:
    8103940S
  • Mfg Part #:
    JTR1478.40
  • OEM/Ref#:
1 / 3

40 Tooth Rear Steel Sprocket For 520 Chain - JTR1478.40

  • Part #:
    8103940S
  • Mfg Part #:
    JTR1478.40
  • OEM/Ref#:
MSRP: $29.95

Price: $27.86 7% off!
Number of Teeth
Make sure this fits your ride
In Stock - 2 on Hand
JT Sprockets 40 Tooth Rear Steel Sprocket For 520 Chain - JTR1478.40
  • Maximum strength sprockets at minimum weight
  • Rear sprockets made with C49 high-carbon steel
  • Each sprocket is heat treated and sandblasted to lower material surface tension
  • Meet or exceed the highest-quality compound standards set by the motorcycle industry

NOTE:
We display every sprocket that fits the machine selected. Be sure the tooth count matches your application for OEM sizing. When changing sprocket sizes be sure to check clearances and chain length. If you need the standard tooth size information or chain size and length, call us toll-free 800-969-7504

Anytime you use other than the standard front/rear sprocket sizes, clearance must be checked.

When converting to a smaller chain size, especially for racing, be sure to use the highest-grade O-ring chain available (Heavy-duty non-O-ring acceptable for drag racing.)



Included Items:

(1) 40 Tooth steel rear sprocket for 520 chain
No instructions

Specifications
Chain Size 520
Material Steel
Mfg #: JTR1478.40
Number of Teeth 40
Part #: 8103940S
Type Sprocket - Rear
Units Each
Weight 1.81 lbs
Alternate/OEM Part Number(s):
JTR147840
UPC Code:
824225300949
Fitment for JT Sprockets 40 Tooth Rear Steel Sprocket For 520 Chain - JTR1478.40

Part 8103940S fits the following machines

Polaris
  • 2x4 250 1993
  • 2x4 300 1994-1995
  • 2x4 350L 1993
  • 2x4 400L 1994-1995
  • 4x4 300 1994-1995
  • 4x4 350L 1993
  • 4x4 400L 1994
  • Big Boss 250 4x6 1989-1992
  • Big Boss 250 6x6 1991-1993
  • Big Boss 300 6x6 1994
  • Big Boss 350L 6x6 1993
  • Big Boss 400L 6x6 1994-1997
  • Big Boss 500 6x6 1998-1999
  • Cyclone 250X 1987
  • Magnum 425 2x4 1995-1998
  • Magnum 425 4x4 1995-1998
  • Magnum 425 6x6 1996-1997
  • Scrambler 250 1985-1986
  • Scrambler 400 2x4 2000-2002
  • Scrambler 400 4x4 1995-2000
  • Scrambler 400 X 4x4 2002-2003
  • Scrambler 500 1997
  • Scrambler 500 2x4 2001-2002
  • Scrambler 500 4x4 1998-2012
  • Scrambler 500 4x4 Freedom 2002
  • Scrambler 500 X 2001
  • Sport 400 1998-1999
  • Sport 400L 1994-1997
  • Sportsman 350 4x4 1993
  • Sportsman 400 4x4 1994-1996
  • Sportsman 400L 4x4 1997
  • Sportsman 500 6x6 2000-2001
  • Trail Blazer 250 1990-1995, 1999-2006
  • Trail Blazer 250 ES 1996-1998
  • Trail Blazer 250 Freedom 2002
  • Trail Blazer 400 2003
  • Trail Boss 250 1985-1986, 1993-1999
  • Trail Boss 250 2x4 1988-1992
  • Trail Boss 250 4x4 1987-1992
  • Trail Boss 250R/ES 1987-1989
  • Trail Boss 325 2000-2002
  • Trail Boss 330 2003-2013
  • Trail Boss 330 Limited Edition 2005
  • Trail Boss 350L 2x4 1990-1992
  • Trail Boss 350L 4x4 1990-1992
  • Xplorer 250 4x4 2000-2002
  • Xplorer 300 4x4 1996-1999
  • Xplorer 400 4x4 1995-2002
  • Xpress 300 1996-1999
  • Xpress 400L 1996-1997
Reviews & Questions
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
5.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
4
0
0
0
0
Finish
5.0 / 5
Fit
5.0 / 5
Quality
5.0 / 5
Style
4.5 / 5
Value
5.0 / 5
Would you recommend this product?
Yes (1)
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
No Review Text Entered By User
October 21, 2009
Fit
5 / 5
Quality
5 / 5
Value
5 / 5
What you would expect.
Good product. Costumer service was great
July 26, 2012
Fit
5 / 5
Quality
5 / 5
Style
4 / 5
Value
5 / 5
the best but
This sprocket is the best yet although it may be cheap it lasts long through any terrain that ive been through it looks good lasts long and has a good price that anyone could afford its the best
February 2, 2010
Finish
5 / 5
Fit
5 / 5
Quality
5 / 5
Value
5 / 5
Would you recommend this product?
Yes
Shipping is fast, fit well
June 5, 2018
Purchased
over 2 years ago