Those look similar to my 1770s, the attached boot tilts forward.
K&N RU-1770 Universal Clamp-On Air Filter, Universal Air Filters
May be one the 20 degree offset angled versions.
X-Stream® Air Flow Assemblies, Filters, and Filter Tops
More to fit R3 62mm TB?
K&N Question
K&N RX-3770 Universal X-Stream Clamp-On Air Filter, Universal Air Filters
Product Specifications
Air Filter Shape Round Tapered
Filter Material Cotton Gauze
Flange Inside Diameter 2.438 in (62 mm)
Flange Length 2.875 in (73 mm)
Flange Type Angled
Flange Angle 20 degrees
Flanges 1
Height 6.563 in (167 mm)
Base Outside Diameter 4.5 in (114 mm)
Top Outside Diameter 6 in (152 mm)
Top Style X-Stream
Top Material None
Package Contents 1 Air Filter
Package Quantity 1
Product Style Round Tapered Universal Air Filter
Weight 1.6 lb (0.7 kg)
Filter Re-Oiling Amount 0.88 oz (26 ml)
Air Filter Large End Diameter 6 in (152 mm)
Product Box Height 11 in (279 mm)
Product Box Length 6.38 in (162 mm)
Product Box Width 6.38 in (162 mm)
Footnote 1 1/4-20 Jack Nut Into Top
Footnote 2 Base Has 25/64" Vent
K&N RX-3800 Universal X-Stream Clamp-On Air Filter, Universal Air Filters
Product Specifications
Air Filter Shape Round Tapered
Filter Material Cotton Gauze
Flange Inside Diameter 2.438 in (62 mm)
Flange Length 2.938 in (75 mm)
Flange Type Angled
Flange Angle 20 degrees
Flanges 1
Height 6.563 in (167 mm)
Base Outside Diameter 4.5 in (114 mm)
Top Outside Diameter 4 in (102 mm)
Top Style X-Stream
Top Material None
Package Contents 1 Air Filter
Package Quantity 1
Product Style Round Tapered Universal Air Filter
Weight 1.3 lb (0.6 kg)
Filter Re-Oiling Amount 0.62 oz (18 ml)
Air Filter Large End Diameter 4.5 in (114 mm)
Product Box Height 11 in (279 mm)
Product Box Length 6.38 in (162 mm)
Product Box Width 6.38 in (162 mm)
Footnote 1 Base Has 25/64" Vent