Authorised Dealer

KB411010 Performance, 88" to 95" big bore piston set. +.010"

Fits: 99-06 Twin Cam A/B
£332.65 SAVE £49.90 (15%)
£282.75

incl. VAT

Available to Order
Stock updated: today at 4:30 am
JOIN IRON STABLE — SAVE 15%

Chapter members save 15% · Sign in for member pricing

Usually dispatched within 3 working days

Part #: KB411010 | Pack: SET

Authorised

Iron City Dealer

14-Day Returns

Easy & hassle-free

Secure Checkout

256-bit encryption

Free UK Delivery

On orders over £100

Specifications

Brand
KB Performance Piston
Part Number
KB411010
OEM Reference
Pack Quantity
Sold as a set
Category
Pistons And Rings Kits
VAT Rate
20%

About This Product

Upgrade your 1999 to 2006 Twin Cam A or B motor with this KB Performance 95 cubic inch big bore conversion set. These +.010" oversize pistons allow you to bore your stock 88" cylinders to 3-7/8", resulting in a high-compression 10.5:1 ratio when used with stock heads. Manufactured from T6 heat-treated 390 hypereutectic cast aluminum, the 16% silicone content ensures minimal thermal expansion. This allows for tighter piston-to-wall clearances, reducing noise and increasing the longevity of the top end. Sold as a set, the kit features a dome head design with a -11.2cc volume. Note that the top compression ring requires additional clearance during gapping, so be sure to follow the included instructions for a proper high-performance build.

Manufacturer part number: KB411010.

Fitment

48 models

99-06 Twin Cam A/B

Dyna
12 models
Brand Year Model
Harley-Davidson 1999–2005 Dyna Low Rider FXDL
Harley-Davidson 2004–2006 Dyna Low Rider FXDLI
Harley-Davidson 2006 Dyna Street Bob FXDBI
Harley-Davidson 2005 Dyna Super Glide Custom FXDC
Harley-Davidson 2005–2006 Dyna Super Glide Custom FXDCI
Harley-Davidson 1999–2005 Dyna Super Glide FXD
Harley-Davidson 2004–2006 Dyna Super Glide FXDI
Harley-Davidson 1999–2005 Dyna Super Glide Sport FXDX
Harley-Davidson 2004–2005 Dyna Super Glide Sport FXDXI
Harley-Davidson 2001–2002 Dyna Super Glide T-Sport FXDXT
Harley-Davidson 1999–2005 Dyna Wide Glide FXDWG
Harley-Davidson 2004–2006 Dyna Wide Glide FXDWGI
Dyna Police
1 model
Brand Year Model
Harley-Davidson 2001–2002 Dyna Defender FXDP
Police
2 models
Brand Year Model
Harley-Davidson 2005 Road King Police Escort FLHPEI
Harley-Davidson 1999–2006 Road King Police FLHPI
Softail
22 models
Brand Year Model
Harley-Davidson 1999–2006 Fat Boy FLSTF
Harley-Davidson 2001–2006 Fat Boy FLSTFI
Harley-Davidson 2005 Fat Boy Shrine FLSTFI
Harley-Davidson 1999–2006 Heritage Softail Classic FLSTC
Harley-Davidson 2001–2005 Heritage Softail Classic FLSTCI
Harley-Davidson 2005 Heritage Softail Classic Shrine FLSTCI
Harley-Davidson 2006 Heritage Softail FLST
Harley-Davidson 2006 Heritage Softail FLSTI
Harley-Davidson 1999–2003 Heritage Springer FLSTS
Harley-Davidson 2003 Heritage Springer FLSTSI
Harley-Davidson 1999–2006 Night Train FXSTB
Harley-Davidson 2001–2006 Night Train FXSTBI
Harley-Davidson 1999 Softail Custom FXSTC
Harley-Davidson 2005–2006 Softail Deluxe FLSTN
Harley-Davidson 2005–2006 Softail Deluxe FLSTNI
Harley-Davidson 2000–2006 Softail Deuce FXSTD
Harley-Davidson 2001–2006 Softail Deuce FXSTDI
Harley-Davidson 1999–2006 Softail Standard FXST
Harley-Davidson 2001–2006 Softail Standard FXSTI
Harley-Davidson 2005–2006 Springer Classic FLSTSCI
Harley-Davidson 1999–2006 Springer Softail FXSTS
Harley-Davidson 2001–2006 Springer Softail FXSTSI
Touring
11 models
Brand Year Model
Harley-Davidson 1999–2005 Electra Glide Classic FLHTC
Harley-Davidson 1999–2006 Electra Glide Classic FLHTCI
Harley-Davidson 1999–2006 Electra Glide Standard FLHT
Harley-Davidson 2006 Electra Glide Standard FLHTI
Harley-Davidson 1999–2003 Road Glide FLTR
Harley-Davidson 1999–2006 Road Glide FLTRI
Harley-Davidson 1999–2006 Road King FLHR
Harley-Davidson 2001–2005 Road King FLHRI
Harley-Davidson 2006 Street Glide FLHX
Harley-Davidson 2006 Street Glide FLHXI
Harley-Davidson 1999–2006 Ultra Classic FLHTCUI

Related Products

View all →

More from KB Performance Piston

View all →

Who are we? Leeds Harley-Davidson - Iron City Motorcycles

Who are we? Leeds Harley-Davidson - Iron City Motorcycles

This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.

From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.

Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.

Free UK Delivery

On orders over £100

14-Day Returns

Easy & hassle-free

Authorised Dealer

Iron City Motorcycles

Secure Payment

256-bit encryption

It looks like you're in Europe

Would you like to view prices in €?