Standard Inner Tube — 18", 3.50-18, 4.00-18, TR-4 (round base)

PARTS UNLIMITED Standard Inner Tube — 18", 3.50-18, 4.00-18, TR-4 (round base)

PARTS UNLIMITED
0350-0343
B20063
Reliable butyl construction for extended air retention. Individually boxed for quick identification and easy installation.
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The Standard Inner Tube delivers reliable air retention and consistent performance for motorcycle tires. "Real butyl tubes" are made from 100% butyl polymer, not blended rubbers, for reduced natural air leakage and longer pressure retention. Each tube ships in its own box with sizes and valve stem types clearly marked on the ends, making selection and installation straightforward. Durable construction maintains ride quality and reduces the need for frequent top-ups. 🏍️🔧

: 0350-0343
In Stock

Data sheet

Type
Motorcycle
Units
Each
Brand
PARTS UNLIMITED
Rim Diameter
18"
Duty
Standard
Inner Tube Valve Stem Type
TR-4 (Round Base), Center Metal Valve (Threaded/Nuts)
Tube Thickness
2.0 mm
Material
Butyl Polymer
Tube Fits Tire Size
3.50-18, 4.00-18

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
HONDA Enduro CRF 2005
HONDA Enduro CRF 2006
HONDA Enduro CRF 2007
HONDA Enduro CRF 2008
HONDA Enduro CRF 2010
HONDA Enduro CRF 2011
HONDA Enduro CRF 2012
HONDA Enduro CRF 2014
HONDA Enduro CRF 2015
HONDA Enduro CRF 2016
HONDA Enduro CRF 2017
HONDA Enduro CRF 2018
HONDA Enduro CRF 2019
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM EXC 2007
KTM EXC 2008
KTM EXC 2009
KTM Sixdays EXC 2010
KTM Sixdays EXC 2011
KTM Sixdays EXC 2012
KTM Sixdays EXC 2013
KTM Sixdays EXC 2014
KTM Sixdays EXC 2015
KTM Sixdays EXC 2016
KTM Sixdays EXC 2017
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM Sixdays EXC 2018
KTM Sixdays EXC 2019
KTM Sixdays EXC 2020
KTM Sixdays EXC 2021
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM EXC 2007
KTM Sixdays EXC 2011
KTM Sixdays EXC 2012
KTM Sixdays EXC 2013
KTM Sixdays EXC 2014
KTM Sixdays EXC 2015
KTM Sixdays EXC 2016
KTM Sixdays EXC 2017
KTM Sixdays EXC 2018
KTM Sixdays EXC 2019
KTM Sixdays EXC 2020
KTM Erzbergrodeo EXC 2021
KTM Erzbergrodeo EXC 2022
KTM Erzbergrodeo EXC 2023
KTM EXC 2009
KTM EXC 2010
KTM EXC 2011
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM EXC 2007
KTM EXC 2007
KTM Sixdays EXC 2009
KTM Sixdays EXC 2010
KTM Sixdays EXC 2011
KTM Sixdays EXC 2012
KTM EXC 2013
KTM Sixdays EXC 2014
KTM Sixdays EXC 2015
KTM EXC 2016
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM EXC 2007
KTM Sixdays EXC 2012
KTM Sixdays EXC 2013
KTM Sixdays EXC 2014
KTM Sixdays EXC 2015
KTM Sixdays EXC 2016
KTM EXC 2004
KTM EXC 2005
KTM EXC 2006
KTM EXC 2007
KTM EXC 2008
KTM Sixdays EXC 2009
KTM Sixdays EXC 2010
KTM Sixdays EXC 2011
KTM EXC-E 2007
KTM EXC-E 2008
KTM EXC-E 2009
KTM EXC-E 2010
KTM EXC-F 2007
KTM EXC-F 2008
KTM EXC-F 2009
KTM Champions Edition EXC-F 2010
KTM Sixdays EXC-F 2011
KTM Sixdays EXC-F 2012
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KTM Sixdays EXC-F 2014
KTM Sixdays EXC-F 2015
KTM Sixdays EXC-F 2016
KTM Sixdays EXC-F 2017
KTM Sixdays EXC-F 2018
KTM Sixdays EXC-F 2019
KTM Sixdays EXC-F 2020
KTM Sixdays EXC-F 2021
KTM Sixdays EXC-F 2012
KTM Sixdays EXC-F 2013
KTM Sixdays EXC-F 2014
KTM Sixdays EXC-F 2015
KTM Sixdays EXC-F 2016
KTM Sixdays EXC-F 2017
KTM Sixdays EXC-F 2018
KTM Sixdays EXC-F 2019
KTM Sixdays EXC-F 2020
KTM WESS EXC-F 2021
KTM Sixdays EXC-F 2017
KTM Sixdays EXC-F 2018
KTM Sixdays EXC-F 2019
KTM Sixdays EXC-F 2020
KTM Sixdays EXC-F 2021
KTM Sixdays EXC-F 2017
KTM Sixdays EXC-F 2018
KTM Sixdays EXC-F 2019
KTM Sixdays EXC-F 2020
KTM Sixdays EXC-F 2021
KTM EXC-G 2004
KTM EXC-G 2004
KTM EXC-G 2005
KTM EXC-G 2006
KTM EXC-G 2004
KTM EXC-G 2005
KTM EXC-G 2006
KTM EXC-G 2004
KTM EXC-G 2005
KTM EXC-G 2006
KTM Sixdays EXC-R 2008
KTM EXC-R 2008
KTM EXC-R 2009
KTM EXC-R 2010
SHERCO 2012
SHERCO 2013
SHERCO 2009
SHERCO 2010
SHERCO 2011
SHERCO Racing 2012
SHERCO Racing 2013
SHERCO SE 2014
SHERCO SE 2015
SHERCO Factory SE 2018
SHERCO Factory SE 2019
SHERCO Factory SE 2020
SHERCO Factory SE 2021
SHERCO 2012
SHERCO 2013
SHERCO 2010
SHERCO 2011
SHERCO Racing 2012
SHERCO Racing 2013
SHERCO SE 2014
SHERCO SE 2015
SHERCO Factory SE 2018
SHERCO Factory SE 2019
SHERCO Factory SE 2020
SHERCO Factory SE 2021
SHERCO 2009
SHERCO 2010
SHERCO 2011
SHERCO Racing 2012
SHERCO 2009
SHERCO 2010
SHERCO 2011
SHERCO Racing 2012
SHERCO Racing 2013
SHERCO SE-R 2014
SHERCO SE-R 2015
SHERCO Racing SE-R 2016
SHERCO Racing SE-R 2017
SHERCO Racing SE-R 2018
SHERCO Racing SE-R 2019
SHERCO Racing SE-R 2020
SHERCO Racing SE-R 2021
SHERCO SE-R 2014
SHERCO SE-R 2015
SHERCO Racing SE-R 2016
SHERCO SE-R 2017
SHERCO Racing SE-R 2018
SHERCO Racing SE-R 2019
SHERCO Racing SE-R 2020
SHERCO Racing SE-R 2021
SHERCO Six Days SE-SD 2018
SHERCO Six Days SE-SD 2018
SHERCO SEF 2015
SHERCO Factory SEF 2018
SHERCO Factory SEF 2019
SHERCO Factory SEF 2020
SHERCO Factory SEF 2021
SHERCO Factory SEF 2018
SHERCO Factory SEF 2019
SHERCO Factory SEF 2020
SHERCO Factory SEF 2021
SHERCO SEF 2015
SHERCO Factory SEF 2018
SHERCO Factory SEF 2019
SHERCO Factory SEF 2020
SHERCO Factory SEF 2021
SHERCO Factory SEF 2019
SHERCO Factory SEF 2020
SHERCO Factory SEF 2021
SHERCO SEF-R 2014
SHERCO SEF-R 2015
SHERCO Racing SEF-R 2016
SHERCO Racing SEF-R 2017
SHERCO Racing SEF-R 2018
SHERCO Racing SEF-R 2019
SHERCO Racing SEF-R 2020
SHERCO Racing SEF-R 2021
SHERCO SEF-R 2014
SHERCO SEF-R 2015
SHERCO SEF-R 2016
SHERCO SEF-R 2017
SHERCO Racing SEF-R 2018
SHERCO Racing SEF-R 2019
SHERCO Racing SEF-R 2020
SHERCO Racing SEF-R 2021
SHERCO SEF-R 2015
SHERCO SEF-R 2016
SHERCO SEF-R 2017
SHERCO Racing SEF-R 2018
SHERCO Racing SEF-R 2019
SHERCO Racing SEF-R 2020
SHERCO Racing SEF-R 2021
SHERCO Racing SEF-R 2020
SHERCO Racing SEF-R 2021
SHERCO Six Days SEF-SD 2018
SHERCO Six Days SEF-SD 2018
SHERCO Six Days SEF-SD 2018
TM RACING EN 2004
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TM RACING EN 2003
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TM RACING EN 2013
TM RACING EN 2015
TM RACING EN 2016
TM RACING EN 2017
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TM RACING EN 2019
TM RACING EN 2020
TM RACING 4T EN 2021
TM RACING EN 2004
TM RACING EN 2005
TM RACING EN 2006
TM RACING EN 2007
TM RACING EN 2008
TM RACING EN 2009
TM RACING EN 2010
TM RACING EN 2011
TM RACING EN 2012
TM RACING EN 2013
TM RACING EN 2014
TM RACING EN 2015
TM RACING EN 2016
TM RACING EN 2017
TM RACING EN 2018
TM RACING EN 2019
YAMAHA WR 2004
YAMAHA WR 2005
YAMAHA WR 2006
YAMAHA WR 2007
YAMAHA WR 2009
YAMAHA WR 2010
YAMAHA WR 2011
YAMAHA WR 2012
YAMAHA WR 2013
YAMAHA WR 2014
YAMAHA WR 2015
YAMAHA WR 2016
YAMAHA WR 2017
YAMAHA Enduro GP WR 2018
YAMAHA WR 2019
YAMAHA WR 2020
YAMAHA WR 2021
YAMAHA WR 2008
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YAMAHA WR 2010
YAMAHA WR 2011
YAMAHA WR 2012
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YAMAHA WR 2019
YAMAHA WR 2020
YAMAHA WR 2004
YAMAHA WR 2005
YAMAHA WR 2006
YAMAHA WR 2007
YAMAHA WR 2008
YAMAHA WR 2010
YAMAHA WR 2011
YAMAHA WR 2012
YAMAHA WR 2013
YAMAHA WR 2014
YAMAHA WR 2015
YAMAHA WR 2016
YAMAHA WR 2017
YAMAHA Enduro GP WR 2018
YAMAHA WR 2019
YAMAHA WR 2021
YAMAHA WR 2022
YAMAHA WR 2023