The conversation comes back with every quote. "A set of pads was half that five years ago." Sometimes it's true, sometimes it's a tidied-up memory, and most often it's a comparison between two things that aren't the same part. The feeling that prices have gone up is real, but it comes from specific places, and it doesn't hit the same items depending on whether you run a motorcycle, a bicycle or a chainsaw.
What follows contains no percentage change. Deliberately. Any headline figure of the "parts have risen by X in five years" sort lumps together part numbers that have changed, ranges that have moved, invisible trade discounts and exchange rates: it's an average of things that aren't comparable. What can be done is to describe the mechanisms precisely, give today's ballpark figures item by item, and hand you enough to judge for yourself whether the quote in front of you stacks up.
Trap number one: the superseded part number
This is the most common explanation and the least well known. A manufacturer's part number rarely lives ten years. It gets replaced, often several times over, by a superseding number: same function, but a technical revision, a change of supplier, a different material, sometimes a complete kit where a single part used to be sold.
Three very concrete consequences:
- The price is repositioned at every supersession, based on the cost of the new part, not the old one uprated for inflation.
- The contents change without warning. An oil seal part number that becomes a kit of seal plus bush plus circlip costs three times as much, and yet the price of "the part" hasn't gone up: it's a different part.
- Online comparison becomes treacherous. The price you find on a 2021 invoice often corresponds to a number you can no longer order.
So before you conclude there's been a rise, check the part number, not the description. Two items both called "front pads" can be two different articles.
What a wear item costs today
Ranges observed for quality parts, labour excluded. They are there to place a quote, not to haggle over pennies.
| Item | Usual range | What moves it |
|---|---|---|
| Motorcycle pads, one set | £20 to £40 organic, £35 to £70 sintered | Compound, 2-piston or 4-piston caliper |
| Motorcycle brake disc, each | £80 to £220 | Floating or fixed, diameter, genuine or OE supplier |
| Complete motorcycle chain kit | £100 to £240 | Seal type, brand, tooth counts |
| Motorcycle road tyres, pair fitted | £220 to £370 | Segment, size, sport or touring fitment |
| Motorcycle battery | £50 to £110 lead-acid, £110 to £240 lithium | Capacity, technology |
| Motorcycle oil service, parts only | £45 to £95 | Oil volume, filter, washers |
| Bicycle chain, 11 or 12 speed | £20 to £60 | Range, surface treatment |
| Bicycle cassette, 11 speed | £40 to £140 | Material of the large sprockets, range |
| Bicycle disc pads, per pair | £10 to £30 | Resin or metallic, brand |
| Road or gravel bicycle tyre | £25 to £65 | Compound, puncture protection |
| Chainsaw chain | £18 to £35 | Pitch, length, cutter type |
| E-bike battery | £400 to £800 | Capacity, frame integration, availability |
Two things follow. First, the spread inside each line is often wider than any year-on-year movement: the choice of range weighs more than the calendar does. Second, labour frequently accounts for half the final bill or more — a chain and cassette change at a bike shop mostly lands in the range detailed in our article on what a chain and cassette change costs.
Genuine, OE supplier, pattern: three prices for one function
This is where most of the budget is decided, far more than in any movement of list prices.
- The genuine part, sold under the manufacturer's brand, is very often made by a supplier who sells exactly the same thing under its own name. You are paying for the packaging, the dealer network, the warranty and the traceability.
- The OE supplier's own-brand part is the same function, often the same factory, in a different box. It is the best value on filters, pads, bearings, belts, spark plugs and chain kits. The gap against genuine commonly sits between 20 and 50 % of the price.
- The pattern part is designed by a third party to look the part. It is sometimes excellent, sometimes out of tolerance. On a cover or a hose, the risk is low. On braking, steering or a load-bearing component, the saving is a bad one. Our article on telling a genuine, pattern or counterfeit part apart gives the visual markers.
Simple rule: OE supplier wherever the function is commonplace and standardised, genuine wherever the part is calibrated to its surroundings (electronics, sensors, internal engine parts) or carries a type approval.
What has genuinely pushed budgets up
The mechanisms are identifiable, even without putting a figure on their effect.
- On-board electronics. An ABS sensor, an ECU, a coded ignition switch, a battery pack with its management electronics are no longer mechanical parts. They aren't repaired, they're replaced, and rarely with an OE supplier alternative.
- Materials and energy. Anything containing a lot of copper, aluminium, cast iron or treated steel, and anything that goes through a furnace or a press, is subject to the same swings as the rest of industry. Wiring looms, discs, rims, radiators.
- Small runs and end-of-life parts. A part re-run in small quantities for a fifteen-year-old model is structurally expensive: the tooling is amortised over a few hundred units. It's the item where price gaps are most violent, and where a used part off a donor machine makes the most sense.
- The logistics of bulky items. Tyres, batteries, fairings, covers: transport and storage weigh proportionally more than they do on a filter.
- Type approval. Lights, mirrors, emissions components: compliance costs money, and rules out unmarked pattern parts.




