Integrated chain adjustment system and apparatus

A motorcycle swingarm end cap, the end cap comprising:

• a housing disposed to detachably integrate with a swing arm of a motorcycle;
• the housing configured to retain a rear axle in a locked position relative to the swing arm, the housing operatively connected to the rear axle through an adjustment fastener, the adjustment fastener configured to adjust the position of the rear axle in relation to the swing arm for adjustment of tensile force on a chain,
• the housing further comprising two mounting portions extending rearwardly from the housing, the mounting portions each defining an aperture, the mounting portions collectively configured to enable attachment of at least one auxiliary member;
• and
• an elongated adjustment member disposed to extend rearwardly from the housing, the elongated adjustment member configured to enable access to the adjustment fastener.