Koch's Performance is proud to offer
these select reproduction parts for vintage Yamaha
snowmobiles
Seat Covers - $130.00 each
1975 GPX Seat Covers
1975 GPX 338 & 433 Seat Covers
Fit Great, Look Right!
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1976 - 1980 SRX Seat Covers
Two different types available.
Black top with red sides or all black. Both
include tuning fork seat logos
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1976-77 SRX Front Bumpers
$180.00 + Shipping
Exact copies of original
aluminum front bumpers, polished. |
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1977-80 SRX Belly Pan Boots
$160.00 per set
These boots are an exact copy of
OEM. They are made from the same type of rubber material as stock.
The cost of original parts when
they were available was $85.00 each. |

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Handle Bar Pads - $60.00
Fits the following:
1974 and 1975 GPX
1976 and 1977 SRX
1976 and 1977 Exciter
F/C |
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Handle Bars -
$269
for 77 SRX & 78
SSR |
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1976-77 SRX 440 Piston Kits
These are high quality
Wiseco Piston Kits custom made to our specs. The redesigned Pro-Lite
configuration(Left) eliminates the thin spot on the piston
(Right) that can lead to compression loss. You can actually see
the discoloration on the old piston.
These are custom designed
and built by the top name in racing pistons, Wiseco. They are
set up for a 0.004 clearance, and come with piston, ring, wrist
pin and circlips.
$140.00 + Shipping
per kit |

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Ring Sets
High quality Wiseco
Piston Rings that fit on your stock Yamaha pistons.
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1976-77 SRX 440 |
$30/ring+shipping |
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1973 SR 433 w/Chrome Bore |
$15/ring+Shipping |
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1973 GPX 433 GYT-Kit |
$15/ring+Shipping |
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GPX SRX Custom Race Pipes
These pipes are custom
built to Yamaha specifications from stock SRX pipes. These pipes
will fit a GPX 338 and 433 as well as the SRX 340 and 440. This
exhaust makes the same power as Yamaha GYT race exhaust.
$450 + Shipping |
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1976 - 1980 SRX Hoods - $450.00
These are show quality
hoods, available in black or white.
Also available in White
& Black for your 1978.
(If purchased with
our graphics, they will be installed at no charge) |
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Yamaha Graphics
Kits
(Reproductions)
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1974 GPX 338F

$137.00 + Shipping
Installation Available |
1974 GPX 433F

$137.00 + Shipping
Installation Available |
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1975 GPX 433G

$125.00 + Shipping
Installation Available |
1976 SRX 340/440 US

$190.00 + Shipping
Installation Available |
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976 SRX 340 or 440 Canadian

$159.60 + Shipping
Installation Available |
1976 SRX 340 or 440 Canadian
Sno Pro

$76.00 + Shipping
Installation Available |
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1977 SRX 440

$165.00 + Shipping
Installation Available |
1978 SRX 440

$189.00 + Shipping
Installation Available |
Additional
kits available (Similar to above)
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1978
SSR $179.00 Plus shipping
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1979
SRX 440 $175 Plus shipping |
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If you are looking for Vintage
Yamaha Snowmobile Parts not listed here, please give us a call.
As Yamaha vintage Snowmobile experts, we have sources for almost
any part that you need. Not only do we have a diverse inventory
on hand, over the years we have formed relationships with many
new, used and reproduction parts resources. Give us a call, chances
are we have a source for that part, or have it in stock
Koch's
Performance
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W8529 County Road X
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Phone: (715) 854-2463
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Fax: (715) 854-2081
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E-Mail: contact@kochsperformance.com
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Vintage Yamaha Snowmobile
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