Does the DENSO W20EPR-U fit the BMW R 100 GS (1986–1994)?
Yes — the DENSO W20EPR-U is a correct fitment for the BMW R 100 GS (1986–1994).
Last verified: 22 July 2026 against 2 independent sources (Cross-brand plug correspondence (NGK + Denso catalogues), Denso Motorcycle Spark Plug Catalogue (official PDF)).
Brakes are safety-critical. Always confirm fitment against your owner's manual before purchase and installation.