• TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
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TC Bros.

TC Bros. Round 5″ Oil Tank

$159.95 USD
Type: Flat
TC Bros. Round 5″ Oil Tank
$159.95 USD
Flat

SKU: 105-0149
Pairs well with
View details

TC Bros. Round 5″ Oil Tank

The size and shape of factory oil tanks often means they can't be reused without lots of fabrication, especially when used on a motorcycle that's been converted to a rigid rear. This round oil tank looks great on a wide variety of motorcycles, from choppers to metric café motorcycles to Britbikes.

  • 10"L × 5"OD
  • Oil capacity is approximately 3 quarts
  • 100% TIG welded mild steel
  • Available with flat or domed (pill-style) ends
  • Pressure tested to ensure leak-free performance
  • CNC-machined, knurled aluminum cap included (1-5/16"-12)
  • CNC-machined bungs (3) are 1/4" NPT for easy plumbing 
  • Proudly made in the USA

This TC Bros. Round Oil Tank has dimensions that agree with a wide variety of build types. It has a custom oil bag look that doesn't shout for attention. It's a highly functional reservoir, too, holding about three quarts of oil, but it's a small enough in diameter to fit even in cramped spaces.

In addition to the filler hole, the tank is set up with bungs to accept 1/4" NPT fittings ready for you to plumb for your feed line, return line, and vent. For a simpler installation, a vented filler cap is available separately. Mounting kits (also available separately) are a natural fit for 1982-2003 Harley-Davidson Sportsters that have been hardtailed using a TC Bros. rear section, but this tank and those kits are also very suitable for Harley-Davidson Big Twins and lots of other custom bikes with a traditional backbone and seat tube arrangement.

We pressure-test these oil bags, but as in any custom build, it's a good idea to do it again after welding and fabrication. Mockup is standard procedure when building a custom motorcycle before applying any final coatings to ensure there are no leaks and there is proper clearance to route fittings and hoses.

Fitment and installation

  • Universal fitment for custom applications; heavy fabrication required
  • A perfect match for TC Bros. Sportster hardtails and very easily adapted to earlier Sportster, most Big Twin, and many metric and British applications
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
  • TC Bros. Round 5″ Oil Tank
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