Cycle X
6246 US Hwy 51 South 

Hazelhurst, WI 54531

Phone: 715-356-7346



Featured Product #1:

Winning Combination For AHRMA Racers.
62mm Wiseco "Pop Top" piston set.
SX-1 camshaft.
CycleX 3rd generation Super-rods.
$ 1850.00


Featured Product #2:
 3rd Generation CycleX Super Rods
Introducing the 3rd generation CycleX Super Rods.

Technical Features:
Fully CNC machined.
Forged 4340 Steel.
Heat treatment: HRC33-38.
+/- 1 gram.
Magnafluxed, Shot peened.
Fully polished.

Also featuring ARP2000 connecting rod bolts:
ARP 2000 bolts are a alloy steel that can be safely heat treated to a higher level, producing a greater strength material than ARP 8740 Chrome Moly bolts.
ARP2000 bolts are capable of achieving a clamp load of 220,000 psi.
ARP2000 connecting rod bolts are widely used used in short track and drag racing with extreme horsepower.
$ 689.00              NOW IN STOCK! 



Featured Product #3:
62 MM Armor Glide Coated Cycle X Vintage Racing Pistons

These 1.00mm over piston sets will be race legal in all formula vintage motorcycle road races and feature a 12.5 compression ratio.
 Lightest pistons in the industry for your go-fast project.

Bore : 62mm
Stroke: 63mm
Cylinder Head Volume: 22cc
Gasket Thickness: 1.2mm
Deck: 8mm
Piston Dome Volume: 11.5cc
Calculated Compression Ratio: 12.5:1
151 Grams ( Bare Weight)
Tool Steel Wrist Pin: 35 Grams
3 Pc. XA Ring Set

ENP-VRP     $ 875.00      IN STOCK!


Featured Product #4:

The Highest Level. 77-78 F2-F3  5mm valve system.

We are proud to reintroduce the 77-78 Honda cb750 Super sport 5mm valve kit.
This kit is used by the top engine builders world wide.
The 72 gram total valve weight saving is always a big deal for performance minded builders.
Don't forget our titanium valve adjuster nuts for more weight savings.
# HR-001           $ 949.00 ( Limited Supply)



Featured Product #5:

1000cc Piston & Cylinder Combo.
Wiseco/CycleX  71mm piston kit with max compression.
Comp. Ht. 0.9255
Bore: 2.7952
2795XC rings.
Generous valve pockets for oversize valves and large camshafts.

Cylinder work:
Blast cylinder.
Stock sleeves removed.
Cylinder bottom surfaced.
Cylinder block bored and honed to accept big-bore sleeves.
Heat and install sleeves.
Surface the top side.
Bore and hone for the 71mm pistons.
Bevel sleeves.
Cylinders are treated with a special filler between 1&2 and 3&4 cylinders for strength.
Machine and install dowel pins to keep the oil feed "O" rings in place. 
Total milling from cylinder top and bottom is .008.
The cylinder has been machined for "O" ring wire .... Generally used with copper head gaskets.
# RF-20          $ 1449.00


Featured Product #6:

RC engineering head / 5mm kit:
Cylinder head modifications:
This RC cylinder head has been fully ported with combustion chamber blending.
We corrected a few things and added 34mm intakes. The seat area was opened up to 86% of the valve size for a proven performance upgrade.
The combustion chamber has been opened to 62mm which would be perfect for you AHRMA folks.
Surfaced to minus .019
Heli-coiled cam tower area with longer coils for strength.
Valve guides have been installed, reamed and a muti-angled valve job was performed.
We have this head nearly completed .... Until a camshaft is selected. At that time valve to valve clearances and spring pressures will need to be checked and set. 

Race proven Kibblewhite 5mm valve kit:
These kits have been used in the TQ sprint car world for decades and proven to be reliable. The TQ cars have been known to exceed 12 thousand rpm consistently.
With these lightweight valves ... Spring pressures can be set lower to gain power and make life easer on valve trane components.
Add lightweight Titanium adjustor nuts and lighten rocker arms for the full benefits of this kit.
$ 1975.00 Call Or E-mail To Order  



Featured Product #7:

970cc Piston And Cylinder Combo.

This 970cc Piston kit (new) and refurbished cylinder is the same combo we use in our shop for years and years.
The 70mm Wiseco pistons are forged with a Armor-glide coating for added insurance.
The piston kit also uses XC rings for easier installation.
Generous valve pockets will accept large camshafts and valves.
Advertised compression ratios will depend on your combustion chamber modifications, amount surfaced or milled and gasket thickness.
The sleeves are super dense cast iron and have proven themselves in many race applications for years and years. 

The cylinder is the early preferred version with perfect fins.
The machine work is lengthy and is also proven in many applications.
Machine work:
Blast cylinder with medium grit to clean and insure that a fresh coat of paint adheres nicely. 
Press out the old sleeves.
Mill to clean up the bottom side of the cylinder.
Bore and hone the alloy cylinder to accept the larger sleeves. 
Machine new "O" ring grooves on the bottom side of the cylinder.
Install sleeves.
Mill the top of the cylinder.
Bore and hone to final size.
6 longer heli-coils are installed.
Our oil feed "O" ring modification is proven and done on all performance cylinders.  Dowel pins are installed to support the inside of the "o" ring to keep it from shifting and falling out of the groove.
Upper case boring and heavy duty components are needed.
For camshaft recommendations .... Give a call someday.
We are one of the largest Honda cb750 camshaft stocking businesses.

$ 1549.00   # RF970-1 



Featured Product #8:

67.5 Piston And Cylinder Combo.

10.25 to 1 Wiseco armor glide piston set.
XC ring sets for easy installation.
CycleX big-bore sleeves ... Tapered to fit in stock upper cases.
157 grams pistons (bare weight)

Machine work:
Glass beaded.
Cylinder block re-sleeved to larger big-bore sleeves.
Bored and honed.
Surfaced (both sides) to .026 undersize.
(6) 12mm long Heli-coils.
Hard blocked between 1&2 and 3&4 cylinders.
Oil feed "O" ring modification. Keeps "O" ring from shifting or moving.


This machine work was performed on the preferred early cylinder.
Only 1 in stock.
# 906-CMB     $ 1425.00


Featured Product #9:

66mm 860cc Piston And Cylinder Combo.

66mm 860cc JE pistons.
Armor glide coated skirts.
170 grams.
Gas ported with XA rings.
Machined valve pockets for OS valves and big-boy camshafts.
Necessary compression for medium to large camshafts. 12.5 to
Perfect bore size for stock, mild ported and fully ported heads.
Proven performance.
Sleeves are stepped so upper case boring is not needed (check anyway)
Sleeve quality is the Highest level. 

Machine work:
Blast cylinder.
Stock sleeves removed.
Cylinder bottom surfaced.
Cylinder block bored and honed to accept big-bore sleeves.
Heat and install sleeves.
Surface the top side.
Bore and hone for the 66mm pistons.
Bevel sleeves.
Cylinders are treated with a special filler between 1&2 and 3&4 cylinders for strength.
Machine and install dowel pins to keep the oil feed "O" rings in place.  
This machine work was performed on the preferred early cylinder.
Piston dome coatings are always available to repel unwanted heat. (good idea)

# 860-CMB     $ 1475.00     Outright sale ( no exchange )




Over Priced & Expensive Stuff

Camshafts & Cam Related





Crankshafts & Connecting Rods

Valve Train
(Valves, Valve springs & Valve Guides)


Carb Systems


Cylinder Studs & Racing Hardware

Refurbished Page

Cush Drives &
Chain Wheels

Engine Chains


Polished, Chrome & Powder Coated Engine Covers

Miscellaneous Parts


Harley Page


Honda CB750 (77-78) F2 Section


Refurbished Rocker Arms



Honda Hot Rod Motors


Machine Work & Services


Git Kit
(High performance combo kits.)

Apparel and Accessories


Cam Chain and Primary Tensioners

Wheels & Accessories


Cycle X Gallery

A collection of our efforts over the past 20+ years, including videos, racers, customers, quotes, behind the scenes pictures, and more!

Tech Tips




High Performance Parts

Cycle X Honda Drag Bike

Cycle X Race Team


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If ordering via phone, please also provide the part # of any products you are interested in for faster and more accurate service.

If you encounter a (rare) broken button as you're trying to add parts to your cart (going to PayPal summary instead of your cart or not opening PayPal at all) or anything else of concern, please call us to report it. We'll try to have it fixed for your convenience within the next 5-10 minutes. Afterwards, refresh the page and try again.

NOTE: As of July 1st, 2018, an extended goods and services tax (GST) has been applied to all Australian consumers buying overseas, charging an extra 10% in taxes to us with each purchase. To ensure that you can continue to purchase from us in Australia and we can provide our parts at our usual lower cost, please contact us at the email below if interested in any particular parts so that we can make a special shipping arrangement for you.




It is the sole and exclusive responsibility of the purchaser to determine the suitability of any part, product or work for his or her use.
The purchaser shall assume all legal, personal injury risk and liability and all other obligations, duties and risks therewith.
There is no warranty on High Performance motors.


Cycle X Global Headquarters

6246 US Hwy 51 South 

Hazelhurst, WI 54531

Phone: 715-356-7346