Maybe assuming trials bikes use them. But a 250 trials put out like 15hp or less. Really. Totally different power and they have way different configuration.
But even on them a 28mm pwk is an improvement.
They have tiny reed valves and don't need the airflow.
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'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
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