"Billet" 67mm (890cc) Lightweight Wiseco Cycle X Pistons (K Models)

We are proud and excited to release these Billet Wiseco pistons with our race proven 30 degree Cycle X domes.

Why Billet?
Without blanks or forgings to achieve the race proven dome configurations, the pistons needed to be billet and built from scratch.
Secondly, Billet pistons can be machined on the undersides to reduce even more weight and run shorter wrist pins.
Conclusion, world class pistons for your five decade old hot-rod Honda.

These 67mm (890cc) and larger piston kits are a perfect match in displacement and compression ratio for the Cycle X "Big Port" cylinder heads.

These pistons have a bare weight of 173 grams and have a Armor Glide skirt coating, tool steel wrist pins, XA ring sets, .00190 piston to cylinder wall clearance, and larger and deeper valve pockets for big valves and big camshafts.

Depending on the year or combustion chamber modifications, the compression ratios are in the 11.5 ish to 12.5 ish range. Your camshaft selection will affect or alter this figures.

Note: The compression ratios was determined with the timing edge of the piston flush with the top of the cylinder.

Note: The cylinder heads are stock cc combustion chambers without milling or surfacing and a .040 head gasket.

69-76 "K" model 22cc cylinder head combustion chambers will have approx 12.8 ish ratio
77-78 "K" model 24cc cylinder head combustion chambers will have approx 12.1 ish ratio

Note: Cylinders will require re-sleeving. Complete kits with sleeves listed below.

ENP-BILLET890-K     $699.95

 

 

 

 

"Billet" Cycle X 890cc 12.1 Piston and Sleeve Kit, 69-78 "K" Models

We are proud and excited to release these Billet Wiseco pistons with our race proven 30 degree Cycle X domes.

Why Billet?
Without blanks or forgings to achieve the race proven dome configurations, the pistons needed to be billet and built from scratch.
Secondly, Billet pistons can be machined on the undersides to reduce even more weight and run shorter wrist pins.
Conclusion, world class pistons for your five decade old hot-rod Honda.

These 67mm (890cc) and larger piston kits are a perfect match in displacement and compression ratio for the Cycle X "Big Port" cylinder heads.

These pistons have a bare weight of 173 grams and have a Armor Glide skirt coating, tool steel wrist pins, XA ring sets, .00190 piston to cylinder wall clearance, and larger and deeper valve pockets for big valves and big camshafts.

Depending on the year or combustion chamber modifications, the compression ratios are in the 11.5 ish to 12.5 ish range. Your camshaft selection will affect or alter this figures.

Why Cycle X sleeves?
Our cylinder sleeve are denser, harder and longer wearing than any sleeve on the market. Most machinists can hear and feel the difference when boring/honing the cylinders.

Note: The compression ratios was determined with the timing edge of the piston flush with the top of the cylinder.

Note: The cylinder heads are stock cc combustion chambers without milling or surfacing and a .040 head gasket.

69-76 "K" model 22cc cylinder head combustion chambers will have approx 12.8 ish ratio
77-78 "K" model 24cc cylinder head combustion chambers will have approx 12.1 ish ratio

Note: Cylinders will require re-sleeving.

For the "F" model version of these pistons, refer to the F2 page.

ENP-890-KIT     $869.00

 

 

Big Bore Combustion Chamber Blending

This combustion chamber service will perfectly match your larger cylinder bore to your combustion chamber.

This procedure is done to any bore size and is accomplished on our milling machine and then hand finishing for extreme accuracy.

$129.00 (Parts and labor)

 

 

 

 

 

 

 

 

 

Thermo Barrier Coating

We are reintroducing or reminding the public about thermo barrier coatings for pistons and combustion chambers. This is the same coating used on our vintage heavyweight super bike (AHRMA) which had remarkable long intervals between tear-downs. 

Here's one of my favorite tests from years ago...
   
The dome coatings in particular were tested on a hot rod v-twin motor (Harley) that started when the owner was super skeptical about the claims of thermo barrier coatings.

Here's what he did...

The front cylinder piston was uncoated. The rear cylinder piston was coated with the above mentioned process. During the running process, the heat sensors showed the rear cylinder 65 degrees cooler. True story. We have noticed the benefits of these coatings many, many years ago and have decided to stock thermo barrier pistons and cylinder heads for the performance minded.

Piston coating: $139.00

Combustion chamber coating: $139.00

Call to order.

 

 

 

If you're in need of tech help, refer to our pistons tech tips page.

 

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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.

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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 products.

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Cycle X Global Headquarters

6246 US Hwy 51 South

Hazelhurst, WI 54531

Phone: 715-356-7346

Email: hotrodcyclex@gmail.com