King Evans from Georgia had this to say about our F2 services after he finished his Gryphon...

"Kenny and the crew at Cycle X provide the amazing customer service and tech support. They bored this bike out to 836cc and fixed all the F2 Honda issues with the head.

The bike is bad a$$ thanks to these guys. Thanks Cycle X."

No problem. ;)

Honda cb750 ( 77-78 ) F2 Section
 
Valve Train Section

The Problem:
Honda CB750 F Supersport models have several problems with the top ends.
They wear out valve guides prematurely, the valves are unleaded fuel unfriendly, the top valve spring retainers are stamped steel and can pull the keepers through causing a valve to drop in the motor.

The Fix:
Cycle X Cast Iron Valve Guides:
Kibblewhite manufactured cast iron guides are made from the best hardened material available. The guides are 49.50 mm in length for added support and longevity.
 
Cycle X Intake Valves:
One piece forged, high nickel stainless, swirl polished and nitride coated.

Cycle X Exhaust Valves:
Kibblewhite manufactured exhaust valves received ours and Kibblewhite's full attention because the exhaust valves and guides are the biggest problem. These specially designed exhaust valves have great flow characteristics and combined with Kibblewhite's proven black diamond process makes these valves the best money can buy.

Cycle X Valve Seals:
Perfect for this combination of valves and guides

Cycle X Retainers:
Honda CB750 77-78 K's and especially F2's have the potential of the keepers pulling through the top spring retainers and dropping the valve into the motor. Many people have felt this heartbreak for the past 30+ years. Honda's later model spring retainers are stamped steel, combined with a steep keeper angle, has only been addressed by complete spring kits costing hundreds of dollars, until now.
 We have been working with Kibblewhite and have developed these top retainers to cure this problem once and for all at a reduced cost.

 

  

OE Replacement Steel Retainers

77-78 F2 Top spring retainers.

Here is the problem:
 Honda CB750 77-78 K's and especially F2's have the potential of the keepers pulling through the top spring retainers and dropping the valve into the motor. Many people have felt this heartbreak for the past 30 plus years. Honda's later model spring retainers are stamped steel, combined with a steep keeper angle, has only been addressed by complete spring kits costing hundreds of dollars, until now.

Here is the fix:
 We have been working with Kibblewhite and have developed these top retainers to cure this problem once and for all at a reduced cost.

The photo on the right shows the imminent damage a valve dropping in the motor will cause.

CNC Manufactured from high tensile strength steel bar stock.
       Case Hardened heat treatment process to provide a hard, wear resistant outer surface, while maintaining a strong ductile core.

  Excess material removed from non-critical areas for weight reduction (1 gram less than stock per keeper)
         
Designed for complete compatibility with OE components.

ENV-RSR    $109.95

Call for availability

Cycle X Lightweight Super Cooling F2 Retainers

Heat is a problem in the F2 valve tranes, these new lightweight top spring retainers feature 8 holes on the top of the retainer. The purpose for these holes is to allow oil to drip down the springs to help with heat dispersion (people in NASCAR use the same technique) and it helps keep the valves well lubricated for longer life. These retainers are made from heat treated carbon steel for durability and strength. 11.25 grams per retainer!

Keep in mind, oil lubricates and picks up heat and carries it away to coolers and such.

ENV-F2R     $159.95

SALE PRICE     $109.95

 

 

 


 


 


F2 (77-78) Super-Flow Valves

Cycle X super-flow valves for the (77-78) Honda CB750 F2 super sport.
Do not let the price fool you. These valves are made of the best materials money can buy!

Honda no longer sells F2 super sport valves. The competition sells F2 valves for twice the money.


ENV-021    $99.00     Intake Valves     (Set Of 4)

 

ENV-022     $99.00     Exhaust Valves     (Set of 4)

 

ENV-023    $159.00     4 Intake & 4 Exhaust     (Set of 8)


Kibblewhite Exhaust Valves

Kibblewhite manufactured exhaust valves received ours and Kibblewhite's full attention because the exhaust valves and guides are the biggest problem. These specially designed exhaust valves have great flow characteristics and combined with Kibblewhite's proven black diamond process makes these valves the best money can buy.
 

Single Valve:
ENV-KF2     $31.95

 

Set of 4 Valves:
ENV-KF2A     $109.95

 

 

Cycle X Cast Iron Valve Guides

Kibblewhite manufactured cast iron guides are made from the best hardened material available. The guides are 49.50 mm in length for added support and longevity.

ENV-CIG     $99.00    (Per Set)

Oversize Valve Guides

Available in +1, +4, +6, +8, and +15 sizes, for intake and exhaust.

Call for pricing and ordering

 

 

High Lift Valve Guides for Honda CB750 (69-78)

These valve guides were designed to handle the highest lift camshafts for your go-fast Honda CB750 project. Up to .500 valve lift.

ENV-HIGH-LIFT-GUIDES     $129.00

Bee-Hive Racing Spring Kits (F2)

Developed for Honda CB750 77-78F models.
We worked hand in hand with Kibblewhite to bring you theses Bee-Hive kits specifically made for the SOHC bike. Unlike most springs out on the market today, that have a "generic" spring rate, these were designed with spring rates that work best with Cycle X, Webcam, and Megacycle cams.
The weight reduction when opening the valve (top collar and half the spring) is about 27 grams per valve less than stock. This weight reduction will result in instant RPM's and horse power that can only be previously achieved by expensive thin stem valve kits.


ENV-030     $239.00
 

High Performance Valve Springs

Designed to accept high lift cams. Another secret to a great 
running motor is a good set of valve springs (besides, yours are 30 years old).

 

ENV-008    $59.00

 

 

 

F2 Valve Kit Fix-Em-Upper Section

  

F2 Head Super Rebuild Kit (Version #1)

Studies show that this set up is the best for reducing wear and prolonging life in your F2 valve train. With our new light weight drilled retainers that allow oil to drip down the springs and valves to help reduce heat and improve all around lubrication, longer cast iron guides for added valve support, and our super flow valves makes this kit far superior over OEM Honda parts and other kits that are available on the market.

Kit includes:
(8) Cast Iron Guides
(4) Super Flow F2 Intake Valves
(4) Super Flow F2 Exhaust Valves
(8) New Light Weight Retainers
(8) Valve Seals

ENV-F2RH     $379.95

F2 Head Super Rebuild Kit (Version #2)

Studies show that this set up is the best for reducing wear and prolonging life in your F2 valve train. With our new OEM Cycle X retainers that replace the faulty stock retainers, High performance spring kit, longer cast iron guides for added valve support, and our super flow valves makes this kit far superior over OEM Honda parts and other kits that are available on the market.

Kit includes:
(8) Cast Iron Guides
(4) Super Flow F2 Intake Valves
(4) Super Flow F2 Exhaust Valves
(8) New OEM Cycle X Retainers
(8) Valve Seals and "O" rings

ENV-F2RC     $389.95

F2 Head Super Rebuild Kit (Version #3)

Studies show that this set up is the best for reducing wear and prolonging life in your F2 valve trane. With our new OEM Cycle X retainers that replace the faulty stock retainers, High performance spring kit, longer cast iron guides for added valve support, and our super flow valves makes this kit far superior over OEM Honda parts and other kits that are available on the market.

Kit includes:
(8) Cast Iron Guides
(4) Super Flow F2 Intake Valves
(4) Super Flow F2 Exhaust Valves
(8) Cycle X OEM Retainers
(8) Valve Seals

 

ENV-F2A     $324.95

F2 Head Super Rebuild Kit (Version #4)
Bee-Hive

Same as all the other versions, but with our Bee-hive valve spring kit.

Kit includes:
(8) Cast Iron Guides
(4) Super Flow F2 Intake Valves
(4) Super Flow F2 Exhaust Valves
Bee-Hive valve spring kit
(8) Valve Seals

 

ENV-F2B     $449.95

Honda CB750 5mm F2 (77-78) Conversion Kit
Cycle X Race Team Approved

This complete 5mm racing conversion kit has been used by many of the top race teams for years.

Kit includes:
Light weight intake valves - Light weight exhaust valves - Intake guides and seals
-Exhaust guides and seals - Keepers and lash caps - Titanium retainers
-Chrome silicon springs - H.T. steel base washers and extra shims - Instructions

This kit retails for $1299.95

ENV-018     Your Cycle X Price: $1049.95

Call for availability

Pistons Section

F2 Supersport 10 1/4 890cc Piston Sets with Armor Glide Coating

These 67mm piston sets are designed for Honda CB750 (77-78 SOHC F2) that are using big duration and high lift camshafts or just hot street life.

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

 

ENP-890-F     $559.95

Cycle X 836cc Pistons 77-78 "F" Models (Armor Glide Coated)
Manufactured by Wiseco

 Designed for the 77-78 "F" models with the correct dome and valve pockets to match your 77-78 Supersport hot-rod Honda combustion chamber.

ENP-836-F     $559.95

Cycle X 970cc (70mm) Pop Top F2 10.5 CR Top End Kit
Cycle X design, manufactured by Wiseco

Cycle X 970cc big bore piston kits are complete as shown for Honda F2-F3 models (77-78)
The Cylinder sleeves are best in the industry (top case boring required)
 MLS head gaskets (financed and tested by Cycle X)
Base gasket (cut out for bigger sleeves)
No leak, no sealer required Valve cover gasket. (another financed and tested product by Cycle X)
Valve seals, "O" rings to complete your go-fast project.
 

ENP-001 Pop Top F2     $889.95

Cycle X 890cc 10.5 Piston and Sleeve Kit

No upper case boring needed with our world class racing sleeves, armor glide coated light weight pistons.
Honda CB750 SOHC F2 (77-78) bikes love this kit size, with or without port work.

ENP-890-KIT-F     $699.95

 

Other Related High Performance Top End Parts

Heavy Duty Cylinder Stud Nuts

Heavy Duty Cylinder Stud Nuts are designed and machined by Cycle X and Kibblewhite for your high performance or stock Honda cb750 (69-78).

Grade 8 High Tensile Steel, Heat Treated for Strength and Black Oxided for corrosion resistance.

ENV-CXSN     $75.95

 

 

 

 


Cycle X Super Studs
Cycle X Race Team Approved

We have been working with Will Kibblewhite for a while on these heavy duty cylinder studs and finally, they're ready for the masses!
Click Here for the Full Story

LIMITED TIME OFFER!


ENV-CXSS

Our Price: $139.95
Sale Price: $110.00

Super Stud and Heavy Duty Stud Nut Combo

Ever wonder what it would be like if Superman and Batman teamed up? Neither have we, but we did wonder what it would be like if our Super Studs and our new Heavy Duty Cylinder Stud Nuts teamed up. The outcome is a combo that takes strength and performance to a new level.

ENV-CXC

Our Price: $195.95
Sale Price: $165.95



Titanium Rocker Arm Jam Nut Set

These Titanium rocker arm jam nuts were used on our Vintage heavyweight Super Bike. They are now available for your go-fast Honda CB750 SOHC project. (69-78) 1.2 grams per nut.

ENV-321            $49.95

 

 

Cycle X Cam Tower Stabilizers!

Why do people install these cam tower stabilizers? (generally welded)

Well many years ago, high performance Honda people were experiencing broken cam chains. The use of huge cams, OEM chains and 200-plus pounds of spring pressure might have had something to do with it.

Many old-timers thought the broken cam chains were a result of the inner cam shaft journals being .006 smaller than the outer cam shaft journals, resulting in camshaft flex.

Secondly, they thought the cam towers were unstable because they were only relying on the 6mm bolts to hold them down.

Anyway, to modify Honda CB750 valve covers usually consists of drilling the valve cover in the proper location, machining the alloy inserts, jigging and welding the inserts in place. Once the valve cover cooled down, the inserts were drilled and final tapped.

The above mentioned process seemed fine to us, except for the amount of
extreme heat during welding and not to mention the machine time involved.

So here's what we came up with...

Our Cycle X modification consists of jigging, drilling, tapping the valve cover and installing our inserts. This cost effective, super strong cure for expensive procedures (without the extreme heat and machining) is available, NOW...

If you still doubt us, here's what one of our customers had to say about our modification:

"Once again you guys are right on the money. Welding on aluminum is not only tricky to do right but actually makes the structure weaker. As a retired tool designer in the aircraft industry we use a LOT of aluminum weldments in tooling for weight as well as common expansion factors since the majority of structure we are holding, positioning, etc. are aluminum. Your fix for this old problem is right on the money, and the price isn't bad either." - Leonard Ledoux

He continues:

"You guys are spot on, putting all that heat into the aluminum casting just turns it into butter. I will grant that 42 years ago it was probably a good idea, but we know so much more today about welding aluminum that it really does relegate the welding approach to the dustbin of tried and failed efforts. Even a machined from billet valve cover would suffer if welded up in the manner usually presented. Your approach is far superior."

Includes:  Modified valve cover. (8) 6mm allen bolts, washers and nuts.

(NOTE: Finish will be bead blasted like in picture)
Cycle X Race Team Approved


ENV-CTS     $139.95     (with exchange)

Call to order

 

ENV-CTS1     $169.95     (without exchange)

Call for availability

 
 
 
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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: 1-715-356-7346

Email: cyclex@cyclexchange.net

 

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