340/440 RACE MODIFICATIONS

We have NO pipes available for the stock engine. We were unable to significantly improve on the stock pipe without losing the much needed torque in a small cc engine. Modified engine package for snowcross or lake racing engine runs at 9000 RPMs so we can maintain good torque with 15 HP gain. This package uses 44mm carbs, short RV cover, and runs on RACE FUEL. Years 1977 - 2006 can be modified. The 1970 Rotax style head for RV engines can modified for 16.5 to 1 head inserts. The domes are available in two different squish depths .030" or 0". Send your head to be machined.

In stock
SKU
340/440 RACE MODIFICATIONS
Grouped product items
Product Name   Model Price Qty
Acorn/Hex Nut 8mm x 1.25 (420842471) Each
420842471
$5.50
Acorn/Hex Nut 8mm x 1.25 (420842471) Pkg 12
420842471 PKG12
$60.00
44 Carb Kit includes 2-44 Round Slide Carbs, 1-2 Cylinder Throttle Cable, and 2 Carb Boots.
1004400
$475.65
Race Porting (send head, cylinders, and top half of crank case)
1031100
$624.75
440 Silenced Race Pipes (Specify Vintage or Big Volume)
1021100
$975.00
Machine 2 Cyl. Head for Inserts 1051205
1051205-4
$175.00
440 Head Inserts 16.5 to 1
1005400
$123.25
440 Reed Head Inserts
1005500
$123.25
Out of stock
440 Reed Race Inserts cut for trail compression (each)
1051010
$57.75
Straight RV Cover (M1-4)
1001350-2
$195.00
340 Sno Pro Piston Size 59.50mm Standard Piston Ring 9750PSR & 54-750RS (Steel) L-Ring (F1-1)
11472M05950-1
$149.00
340 Sno Pro Standard W/P: 18mm Piston Rings: RSB5950 (F1-1)
12188M05950-1
$185.00
340 Ski Doo (Rotax) SPI Piston 9750PS (WPS#54-750PS) (F1-1)
54750PS-1
$68.95
340 Ski Doo (Rotax) .020 Over SPI Piston 09-750-02N (WPS#54-750P2) (F1-1)
54750P2
$47.95
440 LC OEM Ski Doo (Rotax) Piston 420888333 (F1-1) NLA 10/15/20
420888333-2
$0.00
Out of stock
440 MXZ OEM Ski Doo (Rotax) PIston 42088833 (F1-1) NLA 10/15/20
420888333-4
$0.00
Out of stock
440 Reed Ski Doo (Rotax) SPI Piston 9146PS (F1-2)
9146PS-1
$83.95
440 Ski Doo (Rotax) Wiseco Piston .010 over (11426M06775) (F1-2)
11426M06775-1
$150.00
440 Reed Ski Doo (Rotax) Wiseco Piston (2442M06500) F(1-2)
2442M06500
$148.00
340 Ski Doo (Rotax) SPI Piston Ring Only 9750PSR & 54-750RS(FC4-1)
54750RS-1
$20.95
340 Exhaust Valves (420854060) (D2-1)
420854060-2
$0.00
Out of stock
Base Gasket Rotary Valves 2 Cylinder 440 1996-98 & 500 1999 3mm .012(420931360) (FC3-1). Limited Qty. Supersedes to 420931361 4m
B0100SP1015F
$15.75
Base Gasket Rotary Valves 2 Cylinder 440 1996-98 & 500 1999 4mm .015 (420931361) (FC3-1) was part# 420931360 3mm .012
B0100SP1015F-1
$15.75
Base Gasket Rotary Valves 2 Cylinder 440 1996-98 & 500 1999 6mm .024(420931362) NLA. (FC3-1) Use cometic base gasket B0100020F .
B0100020F
$15.75
Base Gasket Rotary Valve 2 Cylinder 440 1997-98 8mm .030(420931364) NLA. Use Cometic Gasket B0100SP1031F (FC3-1)
B0100SP1031F
$15.75
Base Gasket Rotary Valve 2 Cylinder 440 1997-98 8mm .039 B0100SP1039F (FC3-1)
B0100SP1039F
$15.75
Base Gasket Rotary Valve 2 Cylinder 440 1997-98 8mm .047 B0100SP1047F (FC3-1)
B0100SP1047F
$15.75
Base Gasket Rotary Valve 2 Cylinder 440 1997-98 8mm .060 B0100SP1060F (FC3-1)
B0100SP1060F
$15.75
Base Gasket Reed 440 2000-07/600 MXZ 1999-2003 2 Cyl .3mm .012 3 Hole NLA(420931580) (FC3-1)
420931580-2
$13.00
Out of stock
Base Gasket Reed 440 2000-07/600 MXZ 1999-2003 2 Cylinder 4mm .015 4 Hole (420931581) (FC3-1)
B0368015F
$15.75
Base Gasket Reed 440 2000-07/600 MXZ 1999-2003 2 Cylinder 5mm .020 5 Hole (420931583) Supersedes to part# 420431420.(FC3-1)
420431420
$22.50
Base Gasket Reed 440 2000-07/600 MXZ 1999-2003 2 Cylinder 6mm .024 6 Hole (420931582) (FC3-1)
420431421-2
$19.50
Base Gasket Reed 440 2000-07/600 MXZ 1999-2003 2 Cylinder 8mm .030 8 Hole (420931584) Supersedes to part# 420431423.(FC3-1)
420431423
$22.50
Inner Orings OEM Reed 440 1999-2007 2 Cylinder (420950490) (FC2-1)
420950490-1
$12.50
76MM X 2MM Viton Oring Aftermarket Inner Orings Reed 440 1999-2007 2 Cylinder (420950490) (FC2-1)
76X2
$6.25
Inner Oring Aftermarket 70mm x 2mm Blizzard 7500 (354) & 340 2 Cylinder (420831785) NLA. (FC2-1)
70 X 2
$4.00
Inner Oring OEM 700, 780, 809 3 Cylinder & RV 454, 494, 467, 537, 462 2 Cylinder (420831792) was part#420831790 (FC2-1)
420831792-3
$15.00
Inner Oring 700, 780, 809 3 Cylinder & RV 454, 494, 467, 537, 462 2 Cylinder (420831792) Aftermarket 78 x 2(FC2-1)
78 x 2
$5.50
Outer Orings OEM (circular shaped oring) Rotary Valve 440 (454) 1996-97, 500 (494) 1997-99, 580 1996, 670 1996-99 2 Cylinder (42
420850040-1
$6.75
Outer Orings OEM (Square shaped oring) Reed 440 (453) 1999, 440 2000-07 2 Cylinder (420931595) (FC2-2)
420931595-1
$10.00
Rotary Valve Cover Oring 400, 440, 500, 583, 670 (29300023) was part#420831360 (FC2-3 & M3-4)
293300023-3
$13.50
Exhaust Gasket 583/670/440 2003-07/600HO/700 2 Cyls./600/700/780/809/1006/1019/1025/1100 3 Cyls.(420850552) (FC2-3)
420850552-3
$10.50
Exhaust Gasket 440 (454) 340 Sno Pro Rotary Valve NLA Limited QTY (420830980)(FC2-3)
125473
$3.50
After Market Exhaust Gasket 440 (454) 340 Sno Pro Rotary Valve (OEM 420830980)(FC2-3)
1254731
$3.50
Cometic Rave Gasket 340 Sno Pro NLA Part#420230250 (FC2-4)
PV142020F
$3.75
Rave Gasket 440 MXZX Reed Cylinder 2002-07 (420250238) (FC2-4)
420250238-1
$8.00
Reed Gasket 440 MXZX 2002-07 Reed Cylinder (420630810) (FC2-4)
420630810-1
$11.00
V-Force Reed Gasket Small Reed Cage 440, 500, 600 2 Cylinder & 600, 700, 780, 800,1006, 1019, 1025 & 1100 3 Cylinder (G3120)
G3120-9
$4.95
Water Pump Gasket Rotary Valve 6 bolt holes 440 MXZ LC 1997, 500(494) 1997-2000, 583 1997-99, 670 1997-99 (420931355)NLA
WP018020F-4
$5.95
Rotary Valve Seal 12 x 30 x 6mm OEM 420831740 use aftermarket 12-12987.(M2-3)
1212987
$7.95
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