diff --git a/twilight-http/src/request/base.rs b/twilight-http/src/request/base.rs
index 990ac143b4..fd6039146d 100644
--- a/twilight-http/src/request/base.rs
+++ b/twilight-http/src/request/base.rs
@@ -90,11 +90,10 @@ impl RequestBuilder {
         self
     }
 
-    /// Set the multipart form.
-    #[allow(clippy::missing_const_for_fn)]
-    pub fn form(mut self, form: Form) -> Self {
+    /// Set the the multipart form from an existing boundary and buffer.
+    pub fn multipart(mut self, boundary: [u8; 15], buffer: Vec<u8>) -> Self {
         if let Ok(request) = self.0.as_mut() {
-            request.form = Some(form);
+            request.form = Some(Form::from_parts(boundary, buffer));
         }
 
         self
@@ -121,6 +120,15 @@ impl RequestBuilder {
         self
     }
 
+    /// Set the multipart form.
+    pub fn form(mut self, form: Form) -> Self {
+        if let Ok(request) = self.0.as_mut() {
+            request.form = Some(form);
+        }
+
+        self
+    }
+
     /// Whether to use the client's authorization token in the request, if one
     /// is set.
     ///
diff --git a/twilight-http/src/request/multipart.rs b/twilight-http/src/request/multipart.rs
index f2192ad664..b53d6fba7b 100644
--- a/twilight-http/src/request/multipart.rs
+++ b/twilight-http/src/request/multipart.rs
@@ -19,6 +19,10 @@ impl Form {
         Self::default()
     }
 
+    pub(crate) const fn from_parts(boundary: [u8; 15], buffer: Vec<u8>) -> Self {
+        Self { boundary, buffer }
+    }
+
     /// Consume the form, returning the buffer's contents.
     pub fn build(mut self) -> Vec<u8> {
         self.buffer.extend(Self::BOUNDARY_TERMINATOR);
@@ -106,6 +110,10 @@ impl Form {
 
         self
     }
+
+    pub fn into_parts(self) -> ([u8; 15], Vec<u8>) {
+        (self.boundary, self.buffer)
+    }
 }
 
 impl Default for Form {