Rear wheel speedometer drive gearbox, part number BG5330/170 RH, ideal for classic British motorcycle restorations. This right-hand drive unit features a 1.25:1 ratio (15:12) and a 5/8″ axle bore, compatible with rear disc brake setups. For models fitted with Magnetic type speedo's after 1966.

🔧 Specifications:
• Ratio: 1.25:1 (15:12)
• Axle Hole: 5/8″
• Drive Side: Right-hand (RH)
• OEM Reference: 60-4403 / 99-9991 

🏍️ Known Fitments:
• Triumph T160 (1975 - 1976)
• Norton 850 Commando MK3 1975 (rear disc brake, 19″ rear wheel)
• Triumph T140 (select models)

✅ Returns & Customer Satisfaction:

We operate a no-quibble exchange or refund policy. Customer satisfaction and positive feedback are paramount to our business.

If you’re not happy with your purchase, simply return it in original condition and we’ll refund or exchange—no fuss.

⚠️ Note: If this item is purchased for a non-compatible application and returned, postage costs will be deducted from the refund.

 

🏍️ About Timeless Motorcycles:

Based in Mansfield Woodhouse, Nottinghamshire, we specialise in the refurbishment, repair, and servicing of Smiths Chronometric & Magnetic Speedometers & Tachometers. Trusted by restorers worldwide, we’re proud to support the preservation of classic British instrumentation.