// Replacement Parts

Motorcycle Replacement Parts

Classic bike out of production for decades? Custom build needing a one-off? Engine covers, brackets, spacers and bushings machined from your original or your sketch. MOQ 1, no drawing needed.

Classic & vintage bikes
Billet covers from cracked originals
One-offs for custom builds
Quote in 24h

Forty-Year-Old Bike, Zero Parts Supply

Classic motorcycle ownership runs on a dwindling pool of new-old-stock and used parts. Sooner or later the part you need isn't in any swap meet, any online listing, any specialist's shelf. The bike — otherwise complete — waits on a single piece of machined metal. Vintage and specialist bicycles hit the same wall — see bicycle replacement parts.

That part can be made. Send the original, even cracked or worn, and we reproduce it. For missing parts, period photos and the mating components are often enough — see RE without a drawing.

Custom billet CNC machined motorcycle rearset parts by EKINSUN — anodized aluminium
Billet aluminium rearset components machined by EKINSUN — anodized black finish, reproduced from worn originals. No drawing needed.

Motorcycle Parts We Make

Engine covers

Side covers, points covers, inspection caps — billet 6061 from your cracked original.

Frame brackets

Engine mounts, battery trays, fender stays in steel or aluminium.

Wheel spacers & axle blocks

Machined to your axle and swingarm dimensions.

Footpeg & rearset mounts

OEM-pattern replacements or custom rearset brackets.

Fork components

Fork caps, preload spacers, lower clamps (non-structural items).

Bushings & pivots

Swingarm bushings, lever pivots in bronze or PU.

Carburettor fittings

Manifold adapters, velocity stacks, cable guides.

Period fasteners

BSF/BSW/BA and JIS specials. See custom fasteners.

Billet replacements for cracked castings. Original covers and brackets were often die-cast — porous and brittle with age. A CNC-machined billet 6061 replacement keeps the original geometry but is consistently stronger. Polished, brushed or as-machined to match the bike's finish.

Custom Builds — One-Offs From a Sketch

Not every part we make replaces an original. Custom and café builds need parts that never existed: a rearset bracket for a different footpeg position, a sprocket spacer for a wheel swap, a top clamp drilled for modern instruments. A dimensioned hand sketch is enough — we handle the engineering drawing. See sketch to part.

How It Works

  • Send the part or sketch — bike make/model/year and what the part does
  • Free CAD reconstruction — you approve before machining
  • MOQ 1 — single pieces welcome; pairs and spares at marginal cost
  • Finish to match — polished, brushed, anodised, zinc-plated

Parts We Have Made

Representative motorcycle replacement and custom work — classic bikes, vintage racers and custom builds:

Billet CNC machined motorcycle triple clamp by EKINSUN for classic bike restoration
Billet triple clamp — 6061-T6, anodized black. Reproduced from an unobtainable original for a British classic bike.
CNC machined motorcycle wheel spacers precision turned by EKINSUN
Precision wheel spacers — 6061 aluminium, axle bore, shoulder lengths and OD matched to the original. MOQ 1 set.
Pair of aluminium motorcycle wheel spacers CNC turned to exact dimensions by EKINSUN
Paired wheel spacers with engraved branding — custom length, custom OD for a supermoto conversion.

Parts the Factory Stopped Caring About

The value here is narrow and real — one part, for a bike nobody supports anymore, machined from whatever you have left: a cracked casting, a worn original, or a sketch on a worksheet. Bikes stay on the road because someone refuses to scrap them long after the factory moved on. Here is who they are.

// Classic / Vintage Restorer

"The engine side cover is cracked, the bike is 40 years old, and the factory's been gone since the seventies"

A cracked cover still holds everything we need — gasket face, bolt pattern, internal clearances. We machine a fresh one from billet 6061, usually stronger than the original casting, polished or left raw to taste. Send the broken piece; no part number, no factory, no drawing required.

// Custom Builder / Café Racer

"I'm building a one-off and need brackets and spacers that just don't exist off the shelf"

A dimensioned sketch is enough to start. Rearset brackets, triple-clamp spacers, axle blocks, velocity stacks — cut from your measurements, CAD confirmed with you first. There's no minimum, so a single bracket for one build is a perfectly normal order.

// Independent Workshop

"Customers keep handing me unobtainable parts and I need a maker I can quietly rely on"

We sit behind your bench. Send the part, or photos with one known dimension; we reproduce covers, mounts, bushings and pivots to fit, keep the CAD for the next customer with the same bike, and quote within the day so you can give a straight answer at the counter.

// Enthusiast / Owner

"I just need one footpeg mount — the OEM's been discontinued for years and the used ones are all worn out"

One is fine, that's our floor. A worn used part still makes a usable pattern — we recover the original geometry instead of copying the wear, and machine it in steel or aluminium to suit. You're dealing with the shop that cuts it, not a reseller marking up someone else's stock.

What Buyers Search For When a Bike Part Is Gone

vintage motorcycle parts no longer available classic bike engine cover reproduction custom motorcycle bracket one off reverse engineer motorcycle part billet engine cover from cracked original cafe racer rearset bracket custom discontinued motorcycle parts manufacturer swingarm bushing custom bronze triple clamp axle block machined period correct fasteners BSF BSW motorcycle part from sample no drawing wheel spacer custom axle dimension vintage bike part MOQ 1 velocity stack carburettor adapter custom footpeg mount replacement obsolete one off motorcycle part from sketch

Frequently Asked Questions

Yes. Classic and vintage motorcycles are a core use case. Send the original part — worn, cracked or broken — or clear photos with a reference dimension. We measure, rebuild the CAD free, and machine a replacement. No part number or factory support needed.

Often yes. A cracked cover still carries the geometry we need — gasket face, bolt pattern, internal clearances. We machine a replacement from billet 6061 aluminium, which is typically stronger than the original casting. Polished or as-machined finish available.

Yes. Custom triple clamps, rearset brackets, sprocket spacers, axle blocks and one-off fittings from your sketch or measurements. A dimensioned hand drawing is enough to start.

Brake hydraulic components (master cylinders, caliper internals) and structural items that require certification in your jurisdiction. Frame brackets, covers, spacers, bushings, and engine ancillary components are all within scope.

Either. A lot of bike parts are handed — a left and right cover, or mirrored rearset brackets — and we can machine the mirror image from the one good side you send. Tell us you need a matching pair and we mirror the CAD; you don't have to track down both originals.

Send clear photos from several angles with one known dimension — a caliper across a boss, or the bolt spacing — and we can usually quote within 24 hours. Worn or cracked is fine; we reconstruct the part as it was designed, not as it ended up. If we need the physical piece to be certain, we'll tell you before you post it.

Bike Waiting on One Part?

Send the original or a sketch — we machine it. MOQ 1. Quote in 24 hours.

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