====== Ninja JX ======
MR stands for Mugen Racing. The Ninja JX engines were made in the [[osengines|OS Engines]]. These were made for Mugen Seiki and utilized the Ninja JX branding and were distributed by Mugen Seiki.

  * January 28th, 2008  Mugen Seiki announces a new [[ninjajx|Ninja JX]] line in partnership with OS Engines.
  * February 1st, 2008 [[grpgandini|GRP Gandini]] announces that it has ceased production of MR NINJA engines for Mugen Seiki. 
===== Information =====

^Variant ^ Notes 
| Type | Private |  
| Parent Company | Mugen Seiki |
| Founded | 2006 |
| Divisions | Ninja JX |
| Headquarters | Funabashi, Chiba, Japan |
| Status | Active |
| Website | [[http://www.ninja-engines.com|Click]] |

===== Big Block Engines =====
==== Surface ====
  * [[jx21b01|NINJA JX21 B01]] - NINJA JX21 B01 (VZ-B)
  * [[jx21b01a|NINJA JX21 B01A]] - NINJA JX21 B01A (VZ-B)
  * [[jx21b02|NINJA JX21 B02]] - NINJA JX21 B02 (XZ-B)
  * [[jx21b03|NINJA JX21 B03]] - NINJA JX21 B03 (B2101)
  * [[jx21b04|NINJA JX21 B04]] - NINJA JX21 B04 (B2102)
  * [[jx21b05|NINJA JX21 B05]] - NINJA JX21 B05 (B2103)
  * [[jx21b06|NINJA JX21 B06]] - NINJA JX21 B06 (B2104)
  * [[jx21b07|NINJA JX21 B07]] - NINJA JX21 B07 (B2105)