David Cotterill grabbed the first before Bale set up Hal Robson-Kanu for the second.
Kanu added a fourth from close range late on to cap a dominant display.
He collected Kanu's flick on an angle before startling Fulham keeper Niemi with a brilliant strike.
The Baggies were given another set-piece opportunity when Riggott brought down Kanu just outside the box.
BBC: SPORT | Football | Premiership | West Brom 1-2 Middlesbrough
The SLFA responded to Kanu's allegations by saying that financial support must come from government.
It made no difference though as Dindane immediately linked up with substitute Kanu to make it 3-0.
Meanwhile, it appears that striker Nwankwo Kanu will be out of the Nigeria squad for Saturday's game.
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Benjani had the clearest opening of the match when his intelligent run was picked out by Kanu.
Coach Kanu has played down the absence of the trio saying that he has replacements for them.
There was little to get excited about during the match until Kanu opened the scoring for the visitors.
Friday's attack follows violence in the district earlier in the week, between Kanu supporters and supporters of Ford-Kenya.
Hal Robson-Kanu put the home side in front in the eighth minute before Anderson equalized five minutes later.
By contrast, ex-Gunner Kanu unleashed an excellent left-footed effort shortly after which Poom did well to palm over.
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With just Kanu in attack, Harry Redknapp's side lacked the necessary numbers to regularly test the Arsenal defence.
Coach Kanu is hoping that Bangura will lift his squad as they prepare to face the Super Eagles.
Enckelman's suspect handling was exposed when he failed to hold John Utaka's low right-wing cross and striker Kanu capitalised.
But there was no quick reply this time for the Baggies as Kanu shot wide of Schwarzer's left-hand post.
BBC: SPORT | Football | Premiership | West Brom 1-2 Middlesbrough
But Friedel was powerless as Kanu danced around him for the opening goal.
He pushed Horsfield up front alongside Kanu, turning a 4-5-1 into a 4-4-2.
An 18-year-old student, Ombese Obara, was stabbed in the head, during fighting at a Kanu party rally in Kisii on Thursday.
Mr Moi's son Gideon, who is the current chairman of Kanu, the former ruling party, is backing Mr Mudavadi in this election.
"I met the African players at Portsmouth when we played Kanu Nwankwo's charity in May and they are nice people, " Muntari said.
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Kanu and Defoe both missed the target with close-range efforts, while Johnson drove wide left-footed in stoppage time but Defoe's strike proved enough.
The waiting Kanu appeared set to tap the ball in but somehow managed to spoon the ball over the bar from two yards out.
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After the break striker Dindane stabbed home from close range and completed his treble from the spot after Kanu was blatantly tripped by Emmerson Boyce.
Both players stayed away from the Super Eagles for the recent three-nation tournament in London, with Kanu asking not to be considered for the event.
Belgian striker Kevin Mirallas added a third seven minutes later with Hal Robson-Kanu getting a consolation goal for the visitors six minutes before the end.
But the winner came through Robson-Kanu's shot and Reading almost extended their advantage but Turner denied Long and substitute Mathieu Manset, who also shot wide.
But Kanu fears that he will be without a full-strength squad.
It is not like Bolton's Jay-Jay Okocha or Kanu at Arsenal.
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