CT/Pro-X cylinders are the leading power producing upgrade currently available for Honda 250R engines. CT/Pro-X cylinders are available from 250cc to 410cc (stroked). Whether you are building a drag only ATC or an 'all round fun 4Trax', CT has a combination to suit your needs. All CT/Pro-X cylinder kits include these advanced features: 

bullet100% greater coolant capacity over OEM cylinders.
bulletFull water jacket exhaust port tunnel, for fade-free power.
bulletO-ring head gaskets for optimum heat transfer and easy maintenance.
bulletCustom forged piston kit
bulletRemovable iron liner makes Pro-X cylinders infinitely rebuildable.
bulletModern 10-window CT porting layout. CT builds each cylinder order according to your requirements. You may specify your preferred power characteristics.

Pricing for the ultimate in performance check out our CT Power Packages

Cylinder Kits

Part #

price

Pro-X 250 bridged ex.- ported

CY-PX250B-P

$895.00

Pro-X 250 Power Valve- Ported Nichosil Bore

CY-PX250C-V

$1400.00

Pro-X 310 bridged ex.- ported

CY-PX310B-P

$895.00

Pro-X 330 bridged ex. - ported           case machining required

CY-PX330B-P

$1015.00

Pro-X 350 bridged ex.- ported           case machining required

CY-PX350B-P

$1,115.00

Pro-X 350 Power Valve.- ported           case machining required

CY-PX350B-P

$1,400.00

Pro-X Replacement Parts

Part #

retail

top end gasket set, 250-310

GA-PX250

$23.00

top end gasket set, 250-310          (with gasket for spacer plate)

GA-PX250-2

$26.50

top end gasket set, 330

GA-PX330

$26.50

top end gasket set, 350

GA-PX350

$26.50

(includes O-rings,copper washers base & reed gaskets)

     

head, Pro-X 250

CY-PX250H-00

$189.95

head, Pro-X 310 7deg. (all CT)

CY-PX310H-07

$189.95

head, Pro-X 310 12deg.

CY-PX310H-12

$189.95

head, Pro-X 330

CY-PX330H-00

$189.95

head, Pro-X 350

CY-PX350H-00

$189.95

stud (each), cyl./head

FA-PX8x45

$2.50

stud set (6pcs.), cyl./head

FA-PX8x45S

$14.95

copper washer, 6mm (water fittings)

FA-W60-6x10

$0.20

copper washer, 8mm (head nuts)

FA-W60-8x14

$0.37

cylinder plug, 1/4" NPT

FA-SP250P

$0.53

acorn head nut (chrome), (8x1.25)x12

FA-N52-8X12

$1.12

screw, (6x1.0)x30mm w/8mm hex

FA-S76-30

$0.42

screw, (6x1.0)x20mm w/8mm hex

FA-S76-20

$0.33

screw, (6x1.0)x12mm w/10mm hex

FA-JISB612109

$0.38

CT Cylinder Spacer Plates

Part #

retail

spacer plate, 250-310 natural

CY-SP01-00

$40.00

spacer plate, 250-310 red

CY-SP01-RD

$40.00

spacer plate, 250-310 blue

CY-SP01-BL

$40.00

spacer plate, 250-310 black

CY-SP01-BK

$40.00

spacer plate, 250-310 purple

CY-SP01-PU

$40.00

     

spacer plate, 330-410 natural

CY-SP02-00

$40.00

spacer plate, 330-410 red

CY-SP02-RD

$40.00

spacer plate, 330-410 blue

CY-SP02-BL

$40.00

spacer plate, 330-410 black

CY-SP02-BK

$40.00

spacer plate, 330-410 purple

CY-SP02-PU

$40.00

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