Free Shipping On Orders Over $149
(some restrictions apply)

1-800-253-7667

1991 Polaris TRAIL BOSS 250 (W918527) Crankshaft & Piston Trail Boss Update

Change Assembly
Reset Zoom In Zoom Out
Diagrams Shown are for U.S. Models

Crankshaft & Piston Trail Boss Update

Prices shown are USD

Ref#
 Part
MSRP
Qty
 
 
CRANKSHAFT (Incl. 1-8)
1
CRANKSHAFT #1
$329.99
2
CRANKSHAFT,#2
3
CRANK PIN PTO
$26.79
4
ROD CONNECTING
$164.99
5
BEARING,LGE.END
6
SPACER
$17.49
7
BEARING,BALL
$37.99
8
GEAR, CRANKSHAFT
$90.99
9
BEARING, SMALL END
10
KEY WOODRUFF
$9.29
11
PISTON,STANDARD (Standard)
$124.99
11
PISTON,.010"/.25MM O/S (0.25 Oversize)
11
PISTON,.020 /.50MM O/S (0.50 Oversize)
11
SET,PISTON,.040"/1.00MM O/S* (1.00mm/.040" O/S)
12
PISTON,RING,.010 /.25MM O/S (2 (0.25 Oversize)
$25.59
12
PISTON,RING,.020 /.50MM O/S (0.50 Oversize)
$28.99
12
Discontinued
12
SET,PISTON,RING,.040 /1.00MM O/ (1.0 Oversize)
$35.99
13
PIN, PISTON
$30.99
14
CLIP,PISTON PIN,(10)
$4.39
15
Discontinued (0.2mm)
15
SPACER #3 (0.1mm)
16
WASHER
$9.99
17
NUT,LOCK
$7.79
Ronnie's Mail Order

Toll Free: 1-800-253-7667
Contact Us

Hours of Operation

Mon - Fri: 9am - 4pm Eastern
Sat: Closed
Sun: Closed

Newsletter
Subscribe to our newsletter to receive our special email offers and more.