diff --git a/src/BulletDynamics/Dynamics/btRigidBody.cpp b/src/BulletDynamics/Dynamics/btRigidBody.cpp
index a4d8e1d77..10637c6e5 100644
--- a/src/BulletDynamics/Dynamics/btRigidBody.cpp
+++ b/src/BulletDynamics/Dynamics/btRigidBody.cpp
@@ -315,3 +315,39 @@ void btRigidBody::removeConstraintRef(btTypedConstraint* c)
 	m_constraintRefs.remove(c);
 	m_checkCollideWith = m_constraintRefs.size() > 0;
 }
+
+int	btRigidBody::calculateSerializeBufferSize()	const
+{
+	int sz = sizeof(btRigidBodyData);
+	return sz;
+}
+
+	///fills the dataBuffer and returns the struct name (and 0 on failure)
+const char*	btRigidBody::serialize(void* dataBuffer) const
+{
+	btRigidBodyData* rbd = (btRigidBodyData*) dataBuffer;
+	m_invInertiaTensorWorld.serialize(rbd->m_invInertiaTensorWorld);
+	m_linearVelocity.serialize(rbd->m_linearVelocity);
+	m_angularVelocity.serialize(rbd->m_angularVelocity);
+	rbd->m_inverseMass = m_inverseMass;
+	m_angularFactor.serialize(rbd->m_angularFactor);
+	m_linearFactor.serialize(rbd->m_linearFactor);
+	m_gravity.serialize(rbd->m_gravity);
+	m_gravity_acceleration.serialize(rbd->m_gravity_acceleration);
+	m_invInertiaLocal.serialize(rbd->m_invInertiaLocal);
+	m_totalForce.serialize(rbd->m_totalForce);
+	m_totalTorque.serialize(rbd->m_totalTorque);
+	rbd->m_linearDamping = m_linearDamping;
+	rbd->m_angularDamping = m_angularDamping;
+	rbd->m_additionalDamping = m_additionalDamping;
+	rbd->m_additionalDampingFactor = m_additionalDampingFactor;
+	rbd->m_additionalLinearDampingThresholdSqr = m_additionalLinearDampingThresholdSqr;
+	rbd->m_additionalAngularDampingThresholdSqr = m_additionalAngularDampingThresholdSqr;
+	rbd->m_additionalAngularDampingFactor = m_additionalAngularDampingFactor;
+	rbd->m_linearSleepingThreshold=m_linearSleepingThreshold;
+	rbd->m_angularSleepingThreshold = m_angularSleepingThreshold;
+
+	btCollisionObject::serialize(&rbd->m_collisionObjectData);
+
+	return "btRigidBodyData";
+}
\ No newline at end of file
diff --git a/src/BulletDynamics/Dynamics/btRigidBody.h b/src/BulletDynamics/Dynamics/btRigidBody.h
index da1fcb786..3b05e2096 100644
--- a/src/BulletDynamics/Dynamics/btRigidBody.h
+++ b/src/BulletDynamics/Dynamics/btRigidBody.h
@@ -75,7 +75,6 @@ class btRigidBody  : public btCollisionObject
 
 public:
 
-
 	///The btRigidBodyConstructionInfo structure provides information to create a rigid body. Setting mass to zero creates a fixed (non-dynamic) rigid body.
 	///For dynamic objects, you can use the collision shape to approximate the local inertia tensor, otherwise use the zero vector (default argument)
 	///You can use the motion state to synchronize the world transform between physics and graphics objects. 
@@ -495,6 +494,46 @@ public:
 	}
 
 	int	m_debugBodyId;
+
+	virtual	int	calculateSerializeBufferSize()	const;
+
+	///fills the dataBuffer and returns the struct name (and 0 on failure)
+	virtual	const char*	serialize(void* dataBuffer) const;
+
+};
+
+//@todo add m_optionalMotionState and m_constraintRefs to btRigidBodyData
+///btRigidBodyData is used for btRigidBody serialization
+struct	btRigidBodyData
+{
+	btMatrix3x3Data		m_invInertiaTensorWorld;
+	btVector3Data		m_linearVelocity;
+	btVector3Data		m_angularVelocity;
+	btScalar			m_inverseMass;
+	btVector3Data		m_angularFactor;
+	btVector3Data		m_linearFactor;
+
+	btVector3Data		m_gravity;	
+	btVector3Data		m_gravity_acceleration;
+	btVector3Data		m_invInertiaLocal;
+	btVector3Data		m_totalForce;
+	btVector3Data		m_totalTorque;
+	
+	btScalar			m_linearDamping;
+	btScalar			m_angularDamping;
+
+	int				m_additionalDamping;
+	btScalar		m_additionalDampingFactor;
+	btScalar		m_additionalLinearDampingThresholdSqr;
+	btScalar		m_additionalAngularDampingThresholdSqr;
+	btScalar		m_additionalAngularDampingFactor;
+
+
+	btScalar		m_linearSleepingThreshold;
+	btScalar		m_angularSleepingThreshold;
+
+	btCollisionObjectData	m_collisionObjectData;
+	
 };