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YT9B-4 Motocross 12v 120 CCA AGM Power Sport & Motorcycle Battery

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This battery normally ships via USPS Priority mail, with expected* delivery time of 2-4 days. MAKE SURE YOU USE A POST OFFICE DELIVERABLE ADDRESS! Customer will be responsible for shipping charges on returns for undeliverable addresses.

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Product InformationStore Part Number: YT9B-4


Replaces: YT9-BS, YT9B-4

Yuasa Battery, Inc. has been the leading manufacturer of Yamaha motorcycle batteries in the world, building batteries in the U.S.A., Japan and Taiwan to uncompromisingly high standards since 2000. They are the largest American manufacturer and the largest distributor of batteries for motorcycles, snowmobiles, scooters, all-terrain vehicles and personal watercraft

In addition to their vast replacement business with the Motocross brand, Yuasa is the preferred original equipment supplier to many of these same markets. By producing batteries that generate more power, last longer, and require minimum maintenance, Yuasa Battery Inc, via it’s Motocross line has achieved a leadership position in small engine aftermarket starting batteries. Continuous research and development, along with unvarying standards of manufacturing quality, will help maintain our position as market leader around the world.


  • This is the High Performance version of this battery offering a respectable 120 CCA. Finally a High Output battery for your High output vehicle.
  • 1 Year Warranty


*BatteryStuff understands the importance of getting a replacement battery right away and usually ships all batteries the same day as ordered if received before 1:30pm (pacific), however USPS does not guarantee delivery times with priority mail.

This is the Gold Standard for batteries, built by Yuasa in Taiwan to withstand harsh conditions that other manufacturers can't match. Using thin plate manufacturing, you get more starting power than any other battery of it's size. As the saying goes, you get what you pay for.

Works In

Vehicles that YT9B-4 works in

Yamaha 400cc YP400 Majesty(2004-2014)
Yamaha 600cc YZF-R6(2001-2005)
Yamaha 600cc YZF-R6S(2001-2009)
Yamaha 660cc MT-03 (EU)(2006-2013)
Yamaha 660cc XT660X,R,Z (EU)(2004-2013)
Yamaha 700cc Raptor 700, R, R SE(2006-2020)
Yamaha 700cc YFM700R Raptor(2006-2015)
Yamaha 700cc YFM700R, 70R Raptor(2016-2018)
Yamaha 700cc YFM70R Raptor(2007-2016)
Yamaha 750cc YZF-R7(1998-2000)

Tech Specs

  • Dimensions (LxWxH): 6 x 2 3⁄4 x 4 1⁄8 in
  • Weight: 7.5 lb
  • Shipping Weight: 9 lb
  • DC Output Amps: 8
  • Regulatory Approval: ISO 9001
  • Model: YT9B-4
  • Manufacturer: Motocross (by Yuasa)
  • Battery Polarity:
  • Amp/Hr: 8
  • C.C.A.: 120
  • OEM Ref: YT9B-4, YT9B-BS
  • Charged: Ready to Install
  • Manufacturer Part #: YT9B-4
  • Made In: Taiwan

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