S&S Cycle

PERFORMANCE KIT OVERVIEW FOR HARLEY-DAVIDSON ® TWIN CAM 88 ®

98 & 97" BIG BORE KIT Up the displacement of your Twin Cam® 88 to a whopping 98". This bolt-on cylinder kit adds significant displacement without any machining required to your engine. Stroke stays the same at 4.00". Bore increases from 3.750 to 3.937". This kit contains pistons, cylinders and all related parts, gaskets and instructions. SEE PAGE 166 95" HOT SET UP KIT Looking to go further? Consider the Hot Set Up Kits. These kits will put some stride in your glide. Pushrods, covers and hydraulic lifters are all included. Select from a variety of cylinder heads to achieve the compression ratio you desire or keep your stock heads. Kits include S&S Easy Start 570 or 585 chain drive camshafts. SEE PAGE 167 106" STROKER KIT Stroke it! This performance package gives big displacement. The kit’s flywheel assembly increases your stroke from 4 3/8" to a hefty 4 ½" and bumps your 88" to 106". Oversize your stock cylinder bore from 3 ¾" to 3 7/8". No crankcase machining needed. Maintains stock engine height for easy installation. SEE PAGE 165 124" HOT SET UP KIT Move to the ultimate in performance packages! Increase your bore to 41/8" and stroke to 45/8" to realize a massive 124 cubic inches of pure performance. This kit includes flywheel assembly, cylinders and pistons, S&S Easy Start 640 lift chain drive camshafts, hydraulic lifters, pushrods, covers, valve springs and rocker arms. Comes complete with all gaskets and instructions. CTO options give you even more choices. Crankcases require boring to accept the larger cylinder spigots. SEE PAGE 164 4" BORE BOLT-IN SIDEWINDER® BIG BORE KIT S&S 4" big bore cylinder and piston kits boost 88 and 96/103" Harley-Davidson® big twin engines to 100" and 110" respectively. These bolt-in kits don’t require any machining, rebalancing or engine removal, and include just about everything you’ll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining! SEE PAGE 163

PERFORMANCE KIT SPECIFICATIONS FOR HARLEY-DAVIDSON® TWIN CAM 88®

COMPRESSION RATIO

HORSEPOWER TORQUE

KIT DESCRIPTION BORE STROKE

CNC Heads

CAMSHAFT

Stock Heads

79cc

89cc 91cc

(CNC Heads)

83cc

85cc

87cc

90cc

124" Hot Set Up Kit 4 1/8" 4 5/8"

10.9:1 11.4:1* 11.1 10.8:1 11.6:1 11.4:1 11.2:1 10.9:1 640

127 109

130 115

106" Stroker Kit 98" Big Bore Kit 97" Big Bore Kit 95" Hot Set Up Kit

3 7/8" 4 1/2" 3.937" 4" 3.927" 4" 3 7/8" 4"

10.1:1 10.7:1 9.7:1 9.6:1 10.3:1 10.1:1 9.9:1

9.7:1

585

10.4:1 11.1:1 9.9:1 9.7:1 10.6:1 10.3:1 10.1:1 9.8:1 –

9.7:1 9.7:1

10.3:1 9.3:1 9.1:1 9.8:1 9.6:1 9.5:1

9.2:1 –

103 103

107 107

10.3:1 9.4:1 9.2:1 9.9:1

9.7:1

9.5:1

9.3:1

570

*Not Recommended

PERFORMANCE KIT CONTENTS, OPTIONS AND REQUIREMENTS FOR HARLEY-DAVIDSON® TWIN CAM 88®

PACKAGE CONTENTS

REJETTINGOR CALIBRATION CHANGE

MACHINING REQUIRED

CTO OPTIONS

KIT DESCRIPTION

Pistons w/rings

Rocker Arms

Pushrods w/covers

Valve Springs

Heads w/ springs

Flywheels Cylinders

Lifters Cams

Gaskets

124" Hot Set Up Kit 106" Stroker Kit 98" Big Bore Kit 97" Big Bore Kit 95" Hot Set Up Kit

      

    







  

     

 

  

    

 = Optional  = Order separately  = Bore & hone cylinders  = CNC heads  = Combustion chamber size selection  = Cylinder & piston set available *The CTO option column lists only the major items offered. Virtually any option can be selected from our product offerings through the Configure To Order (CTO) program.  = Crankcase machining for center stud  = Crankcase machining for cylinder spigots  = Camshaft selection

162 Order 608-627-1497 S&S Late Models 1999–up