Need some advice?

Leave your details below and we'll get back to you within 48 hours.

* Required Fields

S&S Knucklehead Engine

The S&S KN-Series Knucklehead engines come very close to the original, but a number of improvements were made.

Avaliable in Generator and Alternator Style

Availability: In stock

£8,500.00
S and S Cycle

Product Description

Details

THE S&S KN ENGINE IS A SPECIAL ORDER ONLY PLEASE CALL FOR EXACT PRICING & AVAILABILITY .



The S&S KN-Series Knucklehead engines come very close to the original, but a number of improvements were made.
A Later 58-56, style flywheel assembly is used, with the splined sprocket shaft and a timken sprocket shaft bearing for increased strength. Therefore a 54-65 style tin primary and motor sprocket must be used.
Flathead power rocker arm cover 'tins' are also improved over stock. The lower covers are made of die-cast alluminium, and instead of being held in place by the valve guide, they are held down by valve spring pressure. A special gasket on the bottom of the lower 'tin' provides a good seal and easier access for servicing, since the valve guides do not need to be pressed out in order to remove the lower covers.
Instead of the steel brazed-in hard oil return lines used on stock, S&S has improved oil line design for better reliability, access and assembly.

The S&S KN Series KnuckleHead is avaliable in Generator and Alternator Style

Fitment

• KN74
• 1936-‘99 chassis
• KN93
• 1936-’47 stock chassis – will fit in 1948-'65 chassis with front motor mount spacer (included)
• 1970-’99 Alternator/generator and alternator custom versions, custom bikes with 1970-’99 alternator style primary
• KN-Kone
• 1970-’98 big twin
• 1999 chassis originally equipped with a Harley-Davidson® Evolution® engine
• Can also be installed in earlier chassis if a transmission with a 1970-up mainshaft is used

Features and benefits

• Natural crankcases and black powder coated cylinders and heads
• S&S Super E
• S&S valve train – solid lifters
• S&S Super Stock™ single fire ignition system and polished billet timer
• 1936-‘47 models have correct length sprocket shaft for stock primary and transmission
• Alternator and alternator/generator models have correct sprocket length sprocket shaft for 1970-up primary and transmission
• Alternator/generator engines include oil filter mount for generator location
• Alternator style crankcase – allows the use of modern primary, transmission, clutch components and electrical system


THE S&S KN ENGINE IS A SPECIAL ORDER ONLY PLEASE CALL FOR EXACT PRICING & AVAILABILITY .

Reviews

Write Your Own Review

You're reviewing: S&S Knucklehead Engine

Returns Policy

At Second City Customs we are committed to providing our customers with the highest quality products and service. 

All Products ordered will be dispatched within 5 working days of Second City Customs receiving payment 

Shipping fees include handling and packing fees as well as postage costs.

Handling fees are fixed, whereas transport fees vary according to total weight of the shipment.

We advise you to group your items in one order.

We cannot group two distinct orders placed separately, and shipping fees will apply to each of them.

Your package will be dispatched at your own risk, but special care is taken to protect fragile objects.

Boxes are amply sized and well protected.

However, on rare occasions some products may be found to be faulty or defective and in keeping with our commitment to providing you with an excellent service, we offer the following returns facilities. 

The Warranty shall not apply is the goods have been tampered with, altered or damaged in any way by the customer. 

 

1. Prior to taking any action we would kindly ask you to contact us via email or telephone, where we may be able to resolve the problem and or give you advice on the appropriate action to take. 

2. If the problem cannot be resolved we would suggest that you return the goods to us in the original packaging with any necessary documentation and a copy of your proof of purchase and a not clearly stating what is wrong with the product. 

3. Customers are responsible for the organisation and cost of retuning the goods to us. 

The following information may be helpful.  

4. We would recommend the method of return would be Parcel Force, This service is available through your local Post Office and we would also recommend that you take out adequate insurance to cover the value of the good to be returned. 

5. Second City Customs cannot accept liability for packages damaged or lost during transit. It is the customer’s responsibility to adequately pack and protect the goods and ensure that the parcel is sufficiently insured. 

6.  Returned goods are subject to a 25% Re-Stocking Fee. 

 

7. PayPal fees and any shipping costs are Non Refundable. 

Delivery Information

At Second City Customs we are committed to providing our customers with the highest quality products and service. Shipping fees include handling and packing fees as well as postage costs. Handling fees are fixed, whereas transport fees vary according to total weight of the shipment.

We advise you to group your items in one order.

We cannot group two distinct orders placed separately, and shipping fees will apply to each of them.

Your package will be dispatched at your own risk, but special care is taken to protect fragile objects.

Boxes are amply sized and well protected.

However, on rare occasions some products may be found to be faulty or defective and in keeping with our commitment to providing you with an excellent service, we offer the following returns facilities.

The Warranty shall not apply is the goods have been tampered with, altered or damaged in any way by the customer.

  1. Prior to taking any action we would kindly ask you to contact us via email or telephone, where we may be able to resolve the problem and or give you advice on the appropriate action to take.
  2. If the problem cannot be resolved we would suggest that you return the goods to us in the original packaging with any necessary documentation and a copy of your proof of purchase and a not clearly stating what is wrong with the product.
  3. Customers are responsible for the organisation and cost of retuning the goods to us. The following information may be helpful.
  4. We would recommend the method of return would be Parcel Force, This service is available through your local Post Office and we would also recommend that you take out adequate insurance to cover the value of the good to be returned.
  5. Second City Customs cannot accept liability for packages damaged or lost during transit. It is the customers responsibility to adequately pack and protect the goods and ensure that the parcel is sufficiently insured.
  6. Returned goods are subject to a 25% Re-Stocking Fee.
  7. PayPal fees and any shipping costs are Non Refundable.