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PERFORMANCE MOTORCYCLE PARTS AND KITS FOR AMERICAN V-TWINS

S&S Cycle logo
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97'' Big Bore Kits for 1999–'06 Big Twins

 
 
 
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$789.95
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Dealer Only Item

 
 
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Description
Product Reviews
Specs
Fitment
Instructions

With no need to rebalance flywheels, bore crankcases, or bore cylinders, this kit is about as easy as it gets. Consisting of the largest bore we feel can safely be used in a cylinder with a stock spigot diameter, this kit brings a new definition to the term 'big bore'.


FEATURES AND BENEFITS:

  • No case machining required
  • Bolt-on 9 to 10 cubic inches – cylinders do not require crankcase machining to install
  • Piston weight for 97" kits are the same as stock, requiring no flywheel rebalancing
  • Forged coated pistons are compatible with stock or S&S Super Stock® 79cc & 89cc heads
  • Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams
  • Maintains stock engine height
  • Cosmetic improvements – hard to tell from stock cylinders
    • 11 fins and full fin pattern on cam side closely resembles OEM shape
    • S&S logo and part numbers are less conspicuous


KIT CONTENTS:

  • S&S cylinders with gaskets
  • Piston set with rings

 

 S&S® 97" BIG BORE KITS
Specifications 
 Compression Ratio    Part Number
 Year   Displacement   Stroke   Bore   Cylinder Length   Piston Type   Stock Heads   89cc S&S Heads   Silver Powder Coat 
WBlack Powder Coat  
1999–'06   97"   4"   3.927"   4.937"   Forged
3cc Dome 

9.7:1   9.4:1   910-0201 
910-0205 

 

SPECIAL NOTES:
S&S® highly recommends installing a performance cam for easier starting and better engine performance.
S&S high flow cylinder heads will provide further horsepower gains and are machined for installation of manual/electric compression releases. For an additional .2 bump in compression, order .030" thick head gaskets #900-0216 (2 pack). Remember to check your clearances. These kits require tuning. When used on EFI models, S&S recommends Dynojet® Power Vision flash tuner.

Not legal for sale or use on CA or EPA pollution controlled vehicles.

Overall:
Name:
Matt
Date:
09/02/2013
Review:
Holy CRAP! My 2005 FLHTCUI flat out MOVES! Added bonus: I gained, yes GAINED 5 mpg! Absolutely LOVE this kit!!
Rating:
Name:
Justin
Date:
09/05/2011
Review:
LOVE this kit. Its cheap, easy and very powerful!!
Rating:
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