Stem Rider +/-7D 31.8 90mm Black T6 Alloy 2020 FREE shipping within Australia over AU$100.00 In stock. Available via Buy Online Only Share Loading Facebook Like button... Stem Rider +/-7D 31.8 90mm Black T6 Alloy 2020 FREE shipping within Australia over AU$100.00 In stock. Available via Buy Online Only Share Loading Facebook Like button...